Home / 786,784,797.20-1,085,905,144.68-469,265,393.36

Finding the Fourth Proportional to 786,784,797.20, 1,085,905,144.68 and 469,265,393.36

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Solution

The fourth proportional to 786,784,797.20, 1,085,905,144.68 and 469,265,393.36 is: 647,671,010.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,784,797.20 : 1,085,905,144.68 = 469,265,393.36 : x
  2. Step 2: Convert to fraction form
    786,784,797.20/1,085,905,144.68 = 469,265,393.36/x
  3. Step 3: Cross multiply
    786,784,797.20x = 1,085,905,144.68 × 469,265,393.36
  4. Step 4: Simplify right side
    786,784,797.20x = 509,577,704,869,907,968
  5. Step 5: Solve for x
    x = 509,577,704,869,907,968/786,784,797.20
  6. Step 6: Final answer
    x = 647,671,010.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.