Home / 863,930,753.10-1,192,223,668.95-487,666,539.90

Finding the Fourth Proportional to 863,930,753.10, 1,192,223,668.95 and 487,666,539.90

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Solution

The fourth proportional to 863,930,753.10, 1,192,223,668.95 and 487,666,539.90 is: 672,979,390.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,930,753.10 : 1,192,223,668.95 = 487,666,539.90 : x
  2. Step 2: Convert to fraction form
    863,930,753.10/1,192,223,668.95 = 487,666,539.90/x
  3. Step 3: Cross multiply
    863,930,753.10x = 1,192,223,668.95 × 487,666,539.90
  4. Step 4: Simplify right side
    863,930,753.10x = 581,407,591,423,729,536
  5. Step 5: Solve for x
    x = 581,407,591,423,729,536/863,930,753.10
  6. Step 6: Final answer
    x = 672,979,390.23

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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.