Home / 680,831.28-939,539.25-374,901.30

Finding the Fourth Proportional to 680,831.28, 939,539.25 and 374,901.30

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Solution

The fourth proportional to 680,831.28, 939,539.25 and 374,901.30 is: 517,359.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,831.28 : 939,539.25 = 374,901.30 : x
  2. Step 2: Convert to fraction form
    680,831.28/939,539.25 = 374,901.30/x
  3. Step 3: Cross multiply
    680,831.28x = 939,539.25 × 374,901.30
  4. Step 4: Simplify right side
    680,831.28x = 352,234,486,226.03
  5. Step 5: Solve for x
    x = 352,234,486,226.03/680,831.28
  6. Step 6: Final answer
    x = 517,359.43

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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.