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Finding the Fourth Proportional to 886,860.70, 1,330,291.05 and 354,463.90

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Solution

The fourth proportional to 886,860.70, 1,330,291.05 and 354,463.90 is: 531,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,860.70 : 1,330,291.05 = 354,463.90 : x
  2. Step 2: Convert to fraction form
    886,860.70/1,330,291.05 = 354,463.90/x
  3. Step 3: Cross multiply
    886,860.70x = 1,330,291.05 × 354,463.90
  4. Step 4: Simplify right side
    886,860.70x = 471,540,153,718.10
  5. Step 5: Solve for x
    x = 471,540,153,718.10/886,860.70
  6. Step 6: Final answer
    x = 531,695.85

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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.