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Finding the Fourth Proportional to 713,359.36, 984,423.23 and 391,072.10

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Solution

The fourth proportional to 713,359.36, 984,423.23 and 391,072.10 is: 539,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,359.36 : 984,423.23 = 391,072.10 : x
  2. Step 2: Convert to fraction form
    713,359.36/984,423.23 = 391,072.10/x
  3. Step 3: Cross multiply
    713,359.36x = 984,423.23 × 391,072.10
  4. Step 4: Simplify right side
    713,359.36x = 384,980,460,350.58
  5. Step 5: Solve for x
    x = 384,980,460,350.58/713,359.36
  6. Step 6: Final answer
    x = 539,672.55

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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.