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Finding the Fourth Proportional to 1,382,870, 2,074,654.92 and 385,598

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Solution

The fourth proportional to 1,382,870, 2,074,654.92 and 385,598 is: 578,494.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,870 : 2,074,654.92 = 385,598 : x
  2. Step 2: Convert to fraction form
    1,382,870/2,074,654.92 = 385,598/x
  3. Step 3: Cross multiply
    1,382,870x = 2,074,654.92 × 385,598
  4. Step 4: Simplify right side
    1,382,870x = 799,982,787,842.16
  5. Step 5: Solve for x
    x = 799,982,787,842.16/1,382,870
  6. Step 6: Final answer
    x = 578,494.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.