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Finding the Fourth Proportional to 843,325.60, 1,264,988.40 and 806,000.80

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Solution

The fourth proportional to 843,325.60, 1,264,988.40 and 806,000.80 is: 1,209,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,325.60 : 1,264,988.40 = 806,000.80 : x
  2. Step 2: Convert to fraction form
    843,325.60/1,264,988.40 = 806,000.80/x
  3. Step 3: Cross multiply
    843,325.60x = 1,264,988.40 × 806,000.80
  4. Step 4: Simplify right side
    843,325.60x = 1,019,581,662,390.72
  5. Step 5: Solve for x
    x = 1,019,581,662,390.72/843,325.60
  6. Step 6: Final answer
    x = 1,209,001.20

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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.