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Finding the Fourth Proportional to 886,820.40, 1,330,403.40 and 354,250.80

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Solution

The fourth proportional to 886,820.40, 1,330,403.40 and 354,250.80 is: 531,445.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,820.40 : 1,330,403.40 = 354,250.80 : x
  2. Step 2: Convert to fraction form
    886,820.40/1,330,403.40 = 354,250.80/x
  3. Step 3: Cross multiply
    886,820.40x = 1,330,403.40 × 354,250.80
  4. Step 4: Simplify right side
    886,820.40x = 471,296,468,772.72
  5. Step 5: Solve for x
    x = 471,296,468,772.72/886,820.40
  6. Step 6: Final answer
    x = 531,445.23

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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.