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Finding the Fourth Proportional to 581,128, 801,772.32 and 354,660.16

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Solution

The fourth proportional to 581,128, 801,772.32 and 354,660.16 is: 489,318.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,128 : 801,772.32 = 354,660.16 : x
  2. Step 2: Convert to fraction form
    581,128/801,772.32 = 354,660.16/x
  3. Step 3: Cross multiply
    581,128x = 801,772.32 × 354,660.16
  4. Step 4: Simplify right side
    581,128x = 284,356,699,294.77
  5. Step 5: Solve for x
    x = 284,356,699,294.77/581,128
  6. Step 6: Final answer
    x = 489,318.53

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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.