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Finding the Fourth Proportional to 886,909.10, 1,330,363.65 and 818,480.30

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Solution

The fourth proportional to 886,909.10, 1,330,363.65 and 818,480.30 is: 1,227,720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,909.10 : 1,330,363.65 = 818,480.30 : x
  2. Step 2: Convert to fraction form
    886,909.10/1,330,363.65 = 818,480.30/x
  3. Step 3: Cross multiply
    886,909.10x = 1,330,363.65 × 818,480.30
  4. Step 4: Simplify right side
    886,909.10x = 1,088,876,439,361.10
  5. Step 5: Solve for x
    x = 1,088,876,439,361.10/886,909.10
  6. Step 6: Final answer
    x = 1,227,720.45

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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.