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Finding the Fourth Proportional to 992,473.60, 1,484,773.80 and 860,816.20

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Solution

The fourth proportional to 992,473.60, 1,484,773.80 and 860,816.20 is: 1,287,809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,473.60 : 1,484,773.80 = 860,816.20 : x
  2. Step 2: Convert to fraction form
    992,473.60/1,484,773.80 = 860,816.20/x
  3. Step 3: Cross multiply
    992,473.60x = 1,484,773.80 × 860,816.20
  4. Step 4: Simplify right side
    992,473.60x = 1,278,117,340,375.56
  5. Step 5: Solve for x
    x = 1,278,117,340,375.56/992,473.60
  6. Step 6: Final answer
    x = 1,287,809.91

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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.