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Finding the Fourth Proportional to 591,617.40, 887,426.10 and 442,901.40

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Solution

The fourth proportional to 591,617.40, 887,426.10 and 442,901.40 is: 664,352.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,617.40 : 887,426.10 = 442,901.40 : x
  2. Step 2: Convert to fraction form
    591,617.40/887,426.10 = 442,901.40/x
  3. Step 3: Cross multiply
    591,617.40x = 887,426.10 × 442,901.40
  4. Step 4: Simplify right side
    591,617.40x = 393,042,262,086.54
  5. Step 5: Solve for x
    x = 393,042,262,086.54/591,617.40
  6. Step 6: Final answer
    x = 664,352.10

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Half scale
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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.