Home / 724,278.60-1,086,612.30-645,935.40

Finding the Fourth Proportional to 724,278.60, 1,086,612.30 and 645,935.40

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Solution

The fourth proportional to 724,278.60, 1,086,612.30 and 645,935.40 is: 969,076.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,278.60 : 1,086,612.30 = 645,935.40 : x
  2. Step 2: Convert to fraction form
    724,278.60/1,086,612.30 = 645,935.40/x
  3. Step 3: Cross multiply
    724,278.60x = 1,086,612.30 × 645,935.40
  4. Step 4: Simplify right side
    724,278.60x = 701,881,350,645.42
  5. Step 5: Solve for x
    x = 701,881,350,645.42/724,278.60
  6. Step 6: Final answer
    x = 969,076.47

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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.