Home / 712,634.83-981,775.51-497,395.15

Finding the Fourth Proportional to 712,634.83, 981,775.51 and 497,395.15

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Solution

The fourth proportional to 712,634.83, 981,775.51 and 497,395.15 is: 685,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,634.83 : 981,775.51 = 497,395.15 : x
  2. Step 2: Convert to fraction form
    712,634.83/981,775.51 = 497,395.15/x
  3. Step 3: Cross multiply
    712,634.83x = 981,775.51 × 497,395.15
  4. Step 4: Simplify right side
    712,634.83x = 488,330,377,062.78
  5. Step 5: Solve for x
    x = 488,330,377,062.78/712,634.83
  6. Step 6: Final answer
    x = 685,246.30

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.