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Finding the Fourth Proportional to 655,225.71, 904,061.87 and 368,641.23

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Solution

The fourth proportional to 655,225.71, 904,061.87 and 368,641.23 is: 508,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,225.71 : 904,061.87 = 368,641.23 : x
  2. Step 2: Convert to fraction form
    655,225.71/904,061.87 = 368,641.23/x
  3. Step 3: Cross multiply
    655,225.71x = 904,061.87 × 368,641.23
  4. Step 4: Simplify right side
    655,225.71x = 333,274,477,909.69
  5. Step 5: Solve for x
    x = 333,274,477,909.69/655,225.71
  6. Step 6: Final answer
    x = 508,640.72

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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.