Home / 713,819.76-985,072.68-391,532.50

Finding the Fourth Proportional to 713,819.76, 985,072.68 and 391,532.50

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Solution

The fourth proportional to 713,819.76, 985,072.68 and 391,532.50 is: 540,315.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,819.76 : 985,072.68 = 391,532.50 : x
  2. Step 2: Convert to fraction form
    713,819.76/985,072.68 = 391,532.50/x
  3. Step 3: Cross multiply
    713,819.76x = 985,072.68 × 391,532.50
  4. Step 4: Simplify right side
    713,819.76x = 385,687,969,082.10
  5. Step 5: Solve for x
    x = 385,687,969,082.10/713,819.76
  6. Step 6: Final answer
    x = 540,315.62

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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.