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Finding the Fourth Proportional to 484,447.40, 726,671.10 and 188,959.40

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Solution

The fourth proportional to 484,447.40, 726,671.10 and 188,959.40 is: 283,439.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,447.40 : 726,671.10 = 188,959.40 : x
  2. Step 2: Convert to fraction form
    484,447.40/726,671.10 = 188,959.40/x
  3. Step 3: Cross multiply
    484,447.40x = 726,671.10 × 188,959.40
  4. Step 4: Simplify right side
    484,447.40x = 137,311,335,053.34
  5. Step 5: Solve for x
    x = 137,311,335,053.34/484,447.40
  6. Step 6: Final answer
    x = 283,439.10

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Double scale
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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.