Home / 1,121,615,200.80-1,682,422,801.20-499,829,230.80

Finding the Fourth Proportional to 1,121,615,200.80, 1,682,422,801.20 and 499,829,230.80

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Solution

The fourth proportional to 1,121,615,200.80, 1,682,422,801.20 and 499,829,230.80 is: 749,743,846.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,615,200.80 : 1,682,422,801.20 = 499,829,230.80 : x
  2. Step 2: Convert to fraction form
    1,121,615,200.80/1,682,422,801.20 = 499,829,230.80/x
  3. Step 3: Cross multiply
    1,121,615,200.80x = 1,682,422,801.20 × 499,829,230.80
  4. Step 4: Simplify right side
    1,121,615,200.80x = 840,924,094,604,177,408
  5. Step 5: Solve for x
    x = 840,924,094,604,177,408/1,121,615,200.80
  6. Step 6: Final answer
    x = 749,743,846.20

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Half scale
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Double scale
Find fourth proportional to 1,121,615,201.80, 1,682,422,802.70 and 499,829,231.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.