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Finding the Fourth Proportional to 893,781.60, 1,340,672.40 and 361,028.40

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Solution

The fourth proportional to 893,781.60, 1,340,672.40 and 361,028.40 is: 541,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,781.60 : 1,340,672.40 = 361,028.40 : x
  2. Step 2: Convert to fraction form
    893,781.60/1,340,672.40 = 361,028.40/x
  3. Step 3: Cross multiply
    893,781.60x = 1,340,672.40 × 361,028.40
  4. Step 4: Simplify right side
    893,781.60x = 484,020,811,496.16
  5. Step 5: Solve for x
    x = 484,020,811,496.16/893,781.60
  6. Step 6: Final answer
    x = 541,542.60

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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.