Home / 687,744,844.60-1,031,617,266.90-442,856,831.80

Finding the Fourth Proportional to 687,744,844.60, 1,031,617,266.90 and 442,856,831.80

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Solution

The fourth proportional to 687,744,844.60, 1,031,617,266.90 and 442,856,831.80 is: 664,285,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,744,844.60 : 1,031,617,266.90 = 442,856,831.80 : x
  2. Step 2: Convert to fraction form
    687,744,844.60/1,031,617,266.90 = 442,856,831.80/x
  3. Step 3: Cross multiply
    687,744,844.60x = 1,031,617,266.90 × 442,856,831.80
  4. Step 4: Simplify right side
    687,744,844.60x = 456,858,754,449,508,992
  5. Step 5: Solve for x
    x = 456,858,754,449,508,992/687,744,844.60
  6. Step 6: Final answer
    x = 664,285,247.70

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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.