Home / 641,948.22-885,877.71-355,462.15

Finding the Fourth Proportional to 641,948.22, 885,877.71 and 355,462.15

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Solution

The fourth proportional to 641,948.22, 885,877.71 and 355,462.15 is: 490,531.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,948.22 : 885,877.71 = 355,462.15 : x
  2. Step 2: Convert to fraction form
    641,948.22/885,877.71 = 355,462.15/x
  3. Step 3: Cross multiply
    641,948.22x = 885,877.71 × 355,462.15
  4. Step 4: Simplify right side
    641,948.22x = 314,895,995,433.68
  5. Step 5: Solve for x
    x = 314,895,995,433.68/641,948.22
  6. Step 6: Final answer
    x = 490,531.77

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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.