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Finding the Fourth Proportional to 978,854.60, 1,350,799.01 and 543,246.65

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Solution

The fourth proportional to 978,854.60, 1,350,799.01 and 543,246.65 is: 749,669.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,854.60 : 1,350,799.01 = 543,246.65 : x
  2. Step 2: Convert to fraction form
    978,854.60/1,350,799.01 = 543,246.65/x
  3. Step 3: Cross multiply
    978,854.60x = 1,350,799.01 × 543,246.65
  4. Step 4: Simplify right side
    978,854.60x = 733,817,037,005.82
  5. Step 5: Solve for x
    x = 733,817,037,005.82/978,854.60
  6. Step 6: Final answer
    x = 749,669.09

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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.