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Finding the Fourth Proportional to 678,007.04, 935,646.72 and 376,200.32

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Solution

The fourth proportional to 678,007.04, 935,646.72 and 376,200.32 is: 519,154.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,007.04 : 935,646.72 = 376,200.32 : x
  2. Step 2: Convert to fraction form
    678,007.04/935,646.72 = 376,200.32/x
  3. Step 3: Cross multiply
    678,007.04x = 935,646.72 × 376,200.32
  4. Step 4: Simplify right side
    678,007.04x = 351,990,595,470.95
  5. Step 5: Solve for x
    x = 351,990,595,470.95/678,007.04
  6. Step 6: Final answer
    x = 519,154.78

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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.