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Finding the Fourth Proportional to 854,589.60, 1,281,884.40 and 838,000.80

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Solution

The fourth proportional to 854,589.60, 1,281,884.40 and 838,000.80 is: 1,257,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,589.60 : 1,281,884.40 = 838,000.80 : x
  2. Step 2: Convert to fraction form
    854,589.60/1,281,884.40 = 838,000.80/x
  3. Step 3: Cross multiply
    854,589.60x = 1,281,884.40 × 838,000.80
  4. Step 4: Simplify right side
    854,589.60x = 1,074,220,152,707.52
  5. Step 5: Solve for x
    x = 1,074,220,152,707.52/854,589.60
  6. Step 6: Final answer
    x = 1,257,001.20

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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.