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Finding the Fourth Proportional to 713,056.29, 984,025.43 and 390,759.47

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Solution

The fourth proportional to 713,056.29, 984,025.43 and 390,759.47 is: 539,252.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,056.29 : 984,025.43 = 390,759.47 : x
  2. Step 2: Convert to fraction form
    713,056.29/984,025.43 = 390,759.47/x
  3. Step 3: Cross multiply
    713,056.29x = 984,025.43 × 390,759.47
  4. Step 4: Simplify right side
    713,056.29x = 384,517,248,619.40
  5. Step 5: Solve for x
    x = 384,517,248,619.40/713,056.29
  6. Step 6: Final answer
    x = 539,252.31

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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.