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Finding the Fourth Proportional to 713,719.24, 984,842.64 and 391,344.52

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Solution

The fourth proportional to 713,719.24, 984,842.64 and 391,344.52 is: 540,006.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,719.24 : 984,842.64 = 391,344.52 : x
  2. Step 2: Convert to fraction form
    713,719.24/984,842.64 = 391,344.52/x
  3. Step 3: Cross multiply
    713,719.24x = 984,842.64 × 391,344.52
  4. Step 4: Simplify right side
    713,719.24x = 385,412,770,226.33
  5. Step 5: Solve for x
    x = 385,412,770,226.33/713,719.24
  6. Step 6: Final answer
    x = 540,006.14

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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.