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Finding the Fourth Proportional to 890,752.80, 1,336,226.40 and 862,759.20

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Solution

The fourth proportional to 890,752.80, 1,336,226.40 and 862,759.20 is: 1,294,232.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,752.80 : 1,336,226.40 = 862,759.20 : x
  2. Step 2: Convert to fraction form
    890,752.80/1,336,226.40 = 862,759.20/x
  3. Step 3: Cross multiply
    890,752.80x = 1,336,226.40 × 862,759.20
  4. Step 4: Simplify right side
    890,752.80x = 1,152,841,619,882.88
  5. Step 5: Solve for x
    x = 1,152,841,619,882.88/890,752.80
  6. Step 6: Final answer
    x = 1,294,232.95

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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.