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Finding the Fourth Proportional to 664,688.40, 917,265.24 and 362,882.40

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Solution

The fourth proportional to 664,688.40, 917,265.24 and 362,882.40 is: 500,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,688.40 : 917,265.24 = 362,882.40 : x
  2. Step 2: Convert to fraction form
    664,688.40/917,265.24 = 362,882.40/x
  3. Step 3: Cross multiply
    664,688.40x = 917,265.24 × 362,882.40
  4. Step 4: Simplify right side
    664,688.40x = 332,859,411,727.78
  5. Step 5: Solve for x
    x = 332,859,411,727.78/664,688.40
  6. Step 6: Final answer
    x = 500,775.12

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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.