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Finding the Fourth Proportional to 627,002.64, 865,151.28 and 372,416.40

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Solution

The fourth proportional to 627,002.64, 865,151.28 and 372,416.40 is: 513,867.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,002.64 : 865,151.28 = 372,416.40 : x
  2. Step 2: Convert to fraction form
    627,002.64/865,151.28 = 372,416.40/x
  3. Step 3: Cross multiply
    627,002.64x = 865,151.28 × 372,416.40
  4. Step 4: Simplify right side
    627,002.64x = 322,196,525,152.99
  5. Step 5: Solve for x
    x = 322,196,525,152.99/627,002.64
  6. Step 6: Final answer
    x = 513,867.89

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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.