Home / 429,825,644.80-644,864,963.28-138,687,305.92

Finding the Fourth Proportional to 429,825,644.80, 644,864,963.28 and 138,687,305.92

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Solution

The fourth proportional to 429,825,644.80, 644,864,963.28 and 138,687,305.92 is: 208,071,774.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,825,644.80 : 644,864,963.28 = 138,687,305.92 : x
  2. Step 2: Convert to fraction form
    429,825,644.80/644,864,963.28 = 138,687,305.92/x
  3. Step 3: Cross multiply
    429,825,644.80x = 644,864,963.28 × 138,687,305.92
  4. Step 4: Simplify right side
    429,825,644.80x = 89,434,584,439,502,912
  5. Step 5: Solve for x
    x = 89,434,584,439,502,912/429,825,644.80
  6. Step 6: Final answer
    x = 208,071,774.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.