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Finding the Fourth Proportional to 517,921.92, 714,839.04 and 303,174.72

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Solution

The fourth proportional to 517,921.92, 714,839.04 and 303,174.72 is: 418,443.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,921.92 : 714,839.04 = 303,174.72 : x
  2. Step 2: Convert to fraction form
    517,921.92/714,839.04 = 303,174.72/x
  3. Step 3: Cross multiply
    517,921.92x = 714,839.04 × 303,174.72
  4. Step 4: Simplify right side
    517,921.92x = 216,721,125,797.07
  5. Step 5: Solve for x
    x = 216,721,125,797.07/517,921.92
  6. Step 6: Final answer
    x = 418,443.63

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1.5x scale

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.