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Finding the Fourth Proportional to 886,708.90, 1,330,236.15 and 354,139.30

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Solution

The fourth proportional to 886,708.90, 1,330,236.15 and 354,139.30 is: 531,277.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,708.90 : 1,330,236.15 = 354,139.30 : x
  2. Step 2: Convert to fraction form
    886,708.90/1,330,236.15 = 354,139.30/x
  3. Step 3: Cross multiply
    886,708.90x = 1,330,236.15 × 354,139.30
  4. Step 4: Simplify right side
    886,708.90x = 471,088,898,995.70
  5. Step 5: Solve for x
    x = 471,088,898,995.70/886,708.90
  6. Step 6: Final answer
    x = 531,277.96

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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.