Home / 717,149,724.26-989,656,559.55-399,623,353.29

Finding the Fourth Proportional to 717,149,724.26, 989,656,559.55 and 399,623,353.29

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Solution

The fourth proportional to 717,149,724.26, 989,656,559.55 and 399,623,353.29 is: 551,474,621.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,149,724.26 : 989,656,559.55 = 399,623,353.29 : x
  2. Step 2: Convert to fraction form
    717,149,724.26/989,656,559.55 = 399,623,353.29/x
  3. Step 3: Cross multiply
    717,149,724.26x = 989,656,559.55 × 399,623,353.29
  4. Step 4: Simplify right side
    717,149,724.26x = 395,489,872,930,034,624
  5. Step 5: Solve for x
    x = 395,489,872,930,034,624/717,149,724.26
  6. Step 6: Final answer
    x = 551,474,621.76

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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.