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Finding the Fourth Proportional to 887,144.40, 1,330,889.40 and 381,704.40

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Solution

The fourth proportional to 887,144.40, 1,330,889.40 and 381,704.40 is: 572,630.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,144.40 : 1,330,889.40 = 381,704.40 : x
  2. Step 2: Convert to fraction form
    887,144.40/1,330,889.40 = 381,704.40/x
  3. Step 3: Cross multiply
    887,144.40x = 1,330,889.40 × 381,704.40
  4. Step 4: Simplify right side
    887,144.40x = 508,006,339,893.36
  5. Step 5: Solve for x
    x = 508,006,339,893.36/887,144.40
  6. Step 6: Final answer
    x = 572,630.95

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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.