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Finding the Fourth Proportional to 498,863.70, 748,295.55 and 445,986.90

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Solution

The fourth proportional to 498,863.70, 748,295.55 and 445,986.90 is: 668,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,863.70 : 748,295.55 = 445,986.90 : x
  2. Step 2: Convert to fraction form
    498,863.70/748,295.55 = 445,986.90/x
  3. Step 3: Cross multiply
    498,863.70x = 748,295.55 × 445,986.90
  4. Step 4: Simplify right side
    498,863.70x = 333,730,012,628.30
  5. Step 5: Solve for x
    x = 333,730,012,628.30/498,863.70
  6. Step 6: Final answer
    x = 668,980.35

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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.