Home / 429,825,633.80-644,864,946.78-138,687,294.92

Finding the Fourth Proportional to 429,825,633.80, 644,864,946.78 and 138,687,294.92

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Solution

The fourth proportional to 429,825,633.80, 644,864,946.78 and 138,687,294.92 is: 208,071,757.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,825,633.80 : 644,864,946.78 = 138,687,294.92 : x
  2. Step 2: Convert to fraction form
    429,825,633.80/644,864,946.78 = 138,687,294.92/x
  3. Step 3: Cross multiply
    429,825,633.80x = 644,864,946.78 × 138,687,294.92
  4. Step 4: Simplify right side
    429,825,633.80x = 89,434,575,057,647,952
  5. Step 5: Solve for x
    x = 89,434,575,057,647,952/429,825,633.80
  6. Step 6: Final answer
    x = 208,071,757.53

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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.