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Finding the Fourth Proportional to 715,990,950.90, 988,057,589.58 and 402,725,377.08

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Solution

The fourth proportional to 715,990,950.90, 988,057,589.58 and 402,725,377.08 is: 555,755,439.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,990,950.90 : 988,057,589.58 = 402,725,377.08 : x
  2. Step 2: Convert to fraction form
    715,990,950.90/988,057,589.58 = 402,725,377.08/x
  3. Step 3: Cross multiply
    715,990,950.90x = 988,057,589.58 × 402,725,377.08
  4. Step 4: Simplify right side
    715,990,950.90x = 397,915,865,340,361,408
  5. Step 5: Solve for x
    x = 397,915,865,340,361,408/715,990,950.90
  6. Step 6: Final answer
    x = 555,755,439.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.