Home / 690,816,086.48-953,786,367.54-408,649,174.13

Finding the Fourth Proportional to 690,816,086.48, 953,786,367.54 and 408,649,174.13

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Solution

The fourth proportional to 690,816,086.48, 953,786,367.54 and 408,649,174.13 is: 564,208,070.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,816,086.48 : 953,786,367.54 = 408,649,174.13 : x
  2. Step 2: Convert to fraction form
    690,816,086.48/953,786,367.54 = 408,649,174.13/x
  3. Step 3: Cross multiply
    690,816,086.48x = 953,786,367.54 × 408,649,174.13
  4. Step 4: Simplify right side
    690,816,086.48x = 389,764,011,386,904,704
  5. Step 5: Solve for x
    x = 389,764,011,386,904,704/690,816,086.48
  6. Step 6: Final answer
    x = 564,208,070.74

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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.