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Finding the Fourth Proportional to 819,466.80, 1,229,200.20 and 803,720.40

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Solution

The fourth proportional to 819,466.80, 1,229,200.20 and 803,720.40 is: 1,205,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,466.80 : 1,229,200.20 = 803,720.40 : x
  2. Step 2: Convert to fraction form
    819,466.80/1,229,200.20 = 803,720.40/x
  3. Step 3: Cross multiply
    819,466.80x = 1,229,200.20 × 803,720.40
  4. Step 4: Simplify right side
    819,466.80x = 987,933,276,424.08
  5. Step 5: Solve for x
    x = 987,933,276,424.08/819,466.80
  6. Step 6: Final answer
    x = 1,205,580.60

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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.