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Finding the Fourth Proportional to 993,609.90, 1,490,414.85 and 245,655.90

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Solution

The fourth proportional to 993,609.90, 1,490,414.85 and 245,655.90 is: 368,483.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,609.90 : 1,490,414.85 = 245,655.90 : x
  2. Step 2: Convert to fraction form
    993,609.90/1,490,414.85 = 245,655.90/x
  3. Step 3: Cross multiply
    993,609.90x = 1,490,414.85 × 245,655.90
  4. Step 4: Simplify right side
    993,609.90x = 366,129,201,350.12
  5. Step 5: Solve for x
    x = 366,129,201,350.12/993,609.90
  6. Step 6: Final answer
    x = 368,483.85

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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.