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Finding the Fourth Proportional to 887,318.60, 1,330,589.10 and 354,662.60

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Solution

The fourth proportional to 887,318.60, 1,330,589.10 and 354,662.60 is: 531,838.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,318.60 : 1,330,589.10 = 354,662.60 : x
  2. Step 2: Convert to fraction form
    887,318.60/1,330,589.10 = 354,662.60/x
  3. Step 3: Cross multiply
    887,318.60x = 1,330,589.10 × 354,662.60
  4. Step 4: Simplify right side
    887,318.60x = 471,910,189,737.66
  5. Step 5: Solve for x
    x = 471,910,189,737.66/887,318.60
  6. Step 6: Final answer
    x = 531,838.50

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1.5x scale

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.