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Finding the Fourth Proportional to 908,755.86, 1,363,133.61 and 243,907.86

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Solution

The fourth proportional to 908,755.86, 1,363,133.61 and 243,907.86 is: 365,861.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,755.86 : 1,363,133.61 = 243,907.86 : x
  2. Step 2: Convert to fraction form
    908,755.86/1,363,133.61 = 243,907.86/x
  3. Step 3: Cross multiply
    908,755.86x = 1,363,133.61 × 243,907.86
  4. Step 4: Simplify right side
    908,755.86x = 332,479,001,709.18
  5. Step 5: Solve for x
    x = 332,479,001,709.18/908,755.86
  6. Step 6: Final answer
    x = 365,861.74

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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.