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Finding the Fourth Proportional to 687,901.82, 949,252.47 and 386,037.50

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Solution

The fourth proportional to 687,901.82, 949,252.47 and 386,037.50 is: 532,702.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,901.82 : 949,252.47 = 386,037.50 : x
  2. Step 2: Convert to fraction form
    687,901.82/949,252.47 = 386,037.50/x
  3. Step 3: Cross multiply
    687,901.82x = 949,252.47 × 386,037.50
  4. Step 4: Simplify right side
    687,901.82x = 366,447,050,387.63
  5. Step 5: Solve for x
    x = 366,447,050,387.63/687,901.82
  6. Step 6: Final answer
    x = 532,702.55

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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.