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Finding the Fourth Proportional to 713,054.79, 984,023.36 and 390,757.97

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Solution

The fourth proportional to 713,054.79, 984,023.36 and 390,757.97 is: 539,250.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,054.79 : 984,023.36 = 390,757.97 : x
  2. Step 2: Convert to fraction form
    713,054.79/984,023.36 = 390,757.97/x
  3. Step 3: Cross multiply
    713,054.79x = 984,023.36 × 390,757.97
  4. Step 4: Simplify right side
    713,054.79x = 384,514,963,712.27
  5. Step 5: Solve for x
    x = 384,514,963,712.27/713,054.79
  6. Step 6: Final answer
    x = 539,250.24

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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.