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Finding the Fourth Proportional to 887,694.10, 1,330,885.05 and 488,785.30

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Solution

The fourth proportional to 887,694.10, 1,330,885.05 and 488,785.30 is: 732,816.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,694.10 : 1,330,885.05 = 488,785.30 : x
  2. Step 2: Convert to fraction form
    887,694.10/1,330,885.05 = 488,785.30/x
  3. Step 3: Cross multiply
    887,694.10x = 1,330,885.05 × 488,785.30
  4. Step 4: Simplify right side
    887,694.10x = 650,517,048,429.77
  5. Step 5: Solve for x
    x = 650,517,048,429.77/887,694.10
  6. Step 6: Final answer
    x = 732,816.69

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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.