Home / 746,281.20-1,118,190.60-430,186.80

Finding the Fourth Proportional to 746,281.20, 1,118,190.60 and 430,186.80

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Solution

The fourth proportional to 746,281.20, 1,118,190.60 and 430,186.80 is: 644,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,281.20 : 1,118,190.60 = 430,186.80 : x
  2. Step 2: Convert to fraction form
    746,281.20/1,118,190.60 = 430,186.80/x
  3. Step 3: Cross multiply
    746,281.20x = 1,118,190.60 × 430,186.80
  4. Step 4: Simplify right side
    746,281.20x = 481,030,836,004.08
  5. Step 5: Solve for x
    x = 481,030,836,004.08/746,281.20
  6. Step 6: Final answer
    x = 644,570.49

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Double scale
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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.