Home / 627,337.08-865,781.64-355,471.11

Finding the Fourth Proportional to 627,337.08, 865,781.64 and 355,471.11

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Solution

The fourth proportional to 627,337.08, 865,781.64 and 355,471.11 is: 490,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,337.08 : 865,781.64 = 355,471.11 : x
  2. Step 2: Convert to fraction form
    627,337.08/865,781.64 = 355,471.11/x
  3. Step 3: Cross multiply
    627,337.08x = 865,781.64 × 355,471.11
  4. Step 4: Simplify right side
    627,337.08x = 307,760,360,588.42
  5. Step 5: Solve for x
    x = 307,760,360,588.42/627,337.08
  6. Step 6: Final answer
    x = 490,582.13

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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.