Home / 429,436,874.10-644,344,267.95-199,287,491.70

Finding the Fourth Proportional to 429,436,874.10, 644,344,267.95 and 199,287,491.70

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Solution

The fourth proportional to 429,436,874.10, 644,344,267.95 and 199,287,491.70 is: 299,018,926.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,436,874.10 : 644,344,267.95 = 199,287,491.70 : x
  2. Step 2: Convert to fraction form
    429,436,874.10/644,344,267.95 = 199,287,491.70/x
  3. Step 3: Cross multiply
    429,436,874.10x = 644,344,267.95 × 199,287,491.70
  4. Step 4: Simplify right side
    429,436,874.10x = 128,409,752,951,028,208
  5. Step 5: Solve for x
    x = 128,409,752,951,028,208/429,436,874.10
  6. Step 6: Final answer
    x = 299,018,926.17

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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.