Home / 429,825,634.80-644,864,948.28-138,687,295.92

Finding the Fourth Proportional to 429,825,634.80, 644,864,948.28 and 138,687,295.92

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Solution

The fourth proportional to 429,825,634.80, 644,864,948.28 and 138,687,295.92 is: 208,071,759.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,825,634.80 : 644,864,948.28 = 138,687,295.92 : x
  2. Step 2: Convert to fraction form
    429,825,634.80/644,864,948.28 = 138,687,295.92/x
  3. Step 3: Cross multiply
    429,825,634.80x = 644,864,948.28 × 138,687,295.92
  4. Step 4: Simplify right side
    429,825,634.80x = 89,434,575,910,543,840
  5. Step 5: Solve for x
    x = 89,434,575,910,543,840/429,825,634.80
  6. Step 6: Final answer
    x = 208,071,759.03

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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.