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Finding the Fourth Proportional to 518,414.60, 777,621.90 and 144,437.60

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Solution

The fourth proportional to 518,414.60, 777,621.90 and 144,437.60 is: 216,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,414.60 : 777,621.90 = 144,437.60 : x
  2. Step 2: Convert to fraction form
    518,414.60/777,621.90 = 144,437.60/x
  3. Step 3: Cross multiply
    518,414.60x = 777,621.90 × 144,437.60
  4. Step 4: Simplify right side
    518,414.60x = 112,317,840,943.44
  5. Step 5: Solve for x
    x = 112,317,840,943.44/518,414.60
  6. Step 6: Final answer
    x = 216,656.40

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Similar ratio
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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.