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Finding the Fourth Proportional to 813,908.60, 1,222,029.30 and 615,620.60

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Solution

The fourth proportional to 813,908.60, 1,222,029.30 and 615,620.60 is: 924,313.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,908.60 : 1,222,029.30 = 615,620.60 : x
  2. Step 2: Convert to fraction form
    813,908.60/1,222,029.30 = 615,620.60/x
  3. Step 3: Cross multiply
    813,908.60x = 1,222,029.30 × 615,620.60
  4. Step 4: Simplify right side
    813,908.60x = 752,306,410,883.58
  5. Step 5: Solve for x
    x = 752,306,410,883.58/813,908.60
  6. Step 6: Final answer
    x = 924,313.14

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1.5x scale

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.