Home / 714,229.72-985,665.43-391,951.35

Finding the Fourth Proportional to 714,229.72, 985,665.43 and 391,951.35

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Solution

The fourth proportional to 714,229.72, 985,665.43 and 391,951.35 is: 540,908.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,229.72 : 985,665.43 = 391,951.35 : x
  2. Step 2: Convert to fraction form
    714,229.72/985,665.43 = 391,951.35/x
  3. Step 3: Cross multiply
    714,229.72x = 985,665.43 × 391,951.35
  4. Step 4: Simplify right side
    714,229.72x = 386,332,899,009.80
  5. Step 5: Solve for x
    x = 386,332,899,009.80/714,229.72
  6. Step 6: Final answer
    x = 540,908.46

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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.