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Finding the Fourth Proportional to 643,454.52, 888,045.96 and 371,521.95

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Solution

The fourth proportional to 643,454.52, 888,045.96 and 371,521.95 is: 512,745.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,454.52 : 888,045.96 = 371,521.95 : x
  2. Step 2: Convert to fraction form
    643,454.52/888,045.96 = 371,521.95/x
  3. Step 3: Cross multiply
    643,454.52x = 888,045.96 × 371,521.95
  4. Step 4: Simplify right side
    643,454.52x = 329,928,566,748.82
  5. Step 5: Solve for x
    x = 329,928,566,748.82/643,454.52
  6. Step 6: Final answer
    x = 512,745.74

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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.