Home / 717,494,069.40-990,141,806.70-387,469,179.24

Finding the Fourth Proportional to 717,494,069.40, 990,141,806.70 and 387,469,179.24

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Solution

The fourth proportional to 717,494,069.40, 990,141,806.70 and 387,469,179.24 is: 534,707,462.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,494,069.40 : 990,141,806.70 = 387,469,179.24 : x
  2. Step 2: Convert to fraction form
    717,494,069.40/990,141,806.70 = 387,469,179.24/x
  3. Step 3: Cross multiply
    717,494,069.40x = 990,141,806.70 × 387,469,179.24
  4. Step 4: Simplify right side
    717,494,069.40x = 383,649,433,173,259,776
  5. Step 5: Solve for x
    x = 383,649,433,173,259,776/717,494,069.40
  6. Step 6: Final answer
    x = 534,707,462.45

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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.