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Finding the Fourth Proportional to 713,055.79, 984,024.74 and 390,758.97

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Solution

The fourth proportional to 713,055.79, 984,024.74 and 390,758.97 is: 539,251.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,055.79 : 984,024.74 = 390,758.97 : x
  2. Step 2: Convert to fraction form
    713,055.79/984,024.74 = 390,758.97/x
  3. Step 3: Cross multiply
    713,055.79x = 984,024.74 × 390,758.97
  4. Step 4: Simplify right side
    713,055.79x = 384,516,493,856.92
  5. Step 5: Solve for x
    x = 384,516,493,856.92/713,055.79
  6. Step 6: Final answer
    x = 539,251.63

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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.