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Finding the Fourth Proportional to 713,195.31, 984,207.49 and 390,904.41

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Solution

The fourth proportional to 713,195.31, 984,207.49 and 390,904.41 is: 539,446.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,195.31 : 984,207.49 = 390,904.41 : x
  2. Step 2: Convert to fraction form
    713,195.31/984,207.49 = 390,904.41/x
  3. Step 3: Cross multiply
    713,195.31x = 984,207.49 × 390,904.41
  4. Step 4: Simplify right side
    713,195.31x = 384,731,046,241.51
  5. Step 5: Solve for x
    x = 384,731,046,241.51/713,195.31
  6. Step 6: Final answer
    x = 539,446.97

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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.