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Finding the Fourth Proportional to 658,340.76, 908,584.13 and 371,879.30

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Solution

The fourth proportional to 658,340.76, 908,584.13 and 371,879.30 is: 513,235.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,340.76 : 908,584.13 = 371,879.30 : x
  2. Step 2: Convert to fraction form
    658,340.76/908,584.13 = 371,879.30/x
  3. Step 3: Cross multiply
    658,340.76x = 908,584.13 × 371,879.30
  4. Step 4: Simplify right side
    658,340.76x = 337,883,627,080.74
  5. Step 5: Solve for x
    x = 337,883,627,080.74/658,340.76
  6. Step 6: Final answer
    x = 513,235.16

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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.