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Finding the Fourth Proportional to 887,129.70, 1,330,694.55 and 355,032.60

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Solution

The fourth proportional to 887,129.70, 1,330,694.55 and 355,032.60 is: 532,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,129.70 : 1,330,694.55 = 355,032.60 : x
  2. Step 2: Convert to fraction form
    887,129.70/1,330,694.55 = 355,032.60/x
  3. Step 3: Cross multiply
    887,129.70x = 1,330,694.55 × 355,032.60
  4. Step 4: Simplify right side
    887,129.70x = 472,439,945,892.33
  5. Step 5: Solve for x
    x = 472,439,945,892.33/887,129.70
  6. Step 6: Final answer
    x = 532,548.90

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Similar ratio
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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.