Home / 687,831.20-1,029,997.20-656,338.40

Finding the Fourth Proportional to 687,831.20, 1,029,997.20 and 656,338.40

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Solution

The fourth proportional to 687,831.20, 1,029,997.20 and 656,338.40 is: 982,838.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,831.20 : 1,029,997.20 = 656,338.40 : x
  2. Step 2: Convert to fraction form
    687,831.20/1,029,997.20 = 656,338.40/x
  3. Step 3: Cross multiply
    687,831.20x = 1,029,997.20 × 656,338.40
  4. Step 4: Simplify right side
    687,831.20x = 676,026,714,252.48
  5. Step 5: Solve for x
    x = 676,026,714,252.48/687,831.20
  6. Step 6: Final answer
    x = 982,838.11

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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.