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Finding the Fourth Proportional to 887,442.40, 1,330,256.40 and 437,471.20

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Solution

The fourth proportional to 887,442.40, 1,330,256.40 and 437,471.20 is: 655,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,442.40 : 1,330,256.40 = 437,471.20 : x
  2. Step 2: Convert to fraction form
    887,442.40/1,330,256.40 = 437,471.20/x
  3. Step 3: Cross multiply
    887,442.40x = 1,330,256.40 × 437,471.20
  4. Step 4: Simplify right side
    887,442.40x = 581,948,863,615.68
  5. Step 5: Solve for x
    x = 581,948,863,615.68/887,442.40
  6. Step 6: Final answer
    x = 655,759.59

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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.