Home / 521,822,444.88-720,129,878.19-318,149,553.90

Finding the Fourth Proportional to 521,822,444.88, 720,129,878.19 and 318,149,553.90

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Solution

The fourth proportional to 521,822,444.88, 720,129,878.19 and 318,149,553.90 is: 439,055,471.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,822,444.88 : 720,129,878.19 = 318,149,553.90 : x
  2. Step 2: Convert to fraction form
    521,822,444.88/720,129,878.19 = 318,149,553.90/x
  3. Step 3: Cross multiply
    521,822,444.88x = 720,129,878.19 × 318,149,553.90
  4. Step 4: Simplify right side
    521,822,444.88x = 229,108,999,496,209,856
  5. Step 5: Solve for x
    x = 229,108,999,496,209,856/521,822,444.88
  6. Step 6: Final answer
    x = 439,055,471.35

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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.