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Finding the Fourth Proportional to 660,188,891.70, 990,283,337.55 and 466,478,647.20

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Solution

The fourth proportional to 660,188,891.70, 990,283,337.55 and 466,478,647.20 is: 699,717,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,188,891.70 : 990,283,337.55 = 466,478,647.20 : x
  2. Step 2: Convert to fraction form
    660,188,891.70/990,283,337.55 = 466,478,647.20/x
  3. Step 3: Cross multiply
    660,188,891.70x = 990,283,337.55 × 466,478,647.20
  4. Step 4: Simplify right side
    660,188,891.70x = 461,946,031,645,024,960
  5. Step 5: Solve for x
    x = 461,946,031,645,024,960/660,188,891.70
  6. Step 6: Final answer
    x = 699,717,970.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.