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Finding the Fourth Proportional to 804,297.60, 1,206,446.40 and 615,340.80

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Solution

The fourth proportional to 804,297.60, 1,206,446.40 and 615,340.80 is: 923,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,297.60 : 1,206,446.40 = 615,340.80 : x
  2. Step 2: Convert to fraction form
    804,297.60/1,206,446.40 = 615,340.80/x
  3. Step 3: Cross multiply
    804,297.60x = 1,206,446.40 × 615,340.80
  4. Step 4: Simplify right side
    804,297.60x = 742,375,692,933.12
  5. Step 5: Solve for x
    x = 742,375,692,933.12/804,297.60
  6. Step 6: Final answer
    x = 923,011.20

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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.