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Finding the Fourth Proportional to 886,808.20, 1,330,212.30 and 354,411.40

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Solution

The fourth proportional to 886,808.20, 1,330,212.30 and 354,411.40 is: 531,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,808.20 : 1,330,212.30 = 354,411.40 : x
  2. Step 2: Convert to fraction form
    886,808.20/1,330,212.30 = 354,411.40/x
  3. Step 3: Cross multiply
    886,808.20x = 1,330,212.30 × 354,411.40
  4. Step 4: Simplify right side
    886,808.20x = 471,442,403,540.22
  5. Step 5: Solve for x
    x = 471,442,403,540.22/886,808.20
  6. Step 6: Final answer
    x = 531,617.10

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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.