Home / 429,825,631.05-644,864,942.66-138,687,292.17

Finding the Fourth Proportional to 429,825,631.05, 644,864,942.66 and 138,687,292.17

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Solution

The fourth proportional to 429,825,631.05, 644,864,942.66 and 138,687,292.17 is: 208,071,753.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,825,631.05 : 644,864,942.66 = 138,687,292.17 : x
  2. Step 2: Convert to fraction form
    429,825,631.05/644,864,942.66 = 138,687,292.17/x
  3. Step 3: Cross multiply
    429,825,631.05x = 644,864,942.66 × 138,687,292.17
  4. Step 4: Simplify right side
    429,825,631.05x = 89,434,572,712,184,272
  5. Step 5: Solve for x
    x = 89,434,572,712,184,272/429,825,631.05
  6. Step 6: Final answer
    x = 208,071,753.41

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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.