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Finding the Fourth Proportional to 822,785.40, 1,236,251.70 and 523,409.40

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Solution

The fourth proportional to 822,785.40, 1,236,251.70 and 523,409.40 is: 786,433.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,785.40 : 1,236,251.70 = 523,409.40 : x
  2. Step 2: Convert to fraction form
    822,785.40/1,236,251.70 = 523,409.40/x
  3. Step 3: Cross multiply
    822,785.40x = 1,236,251.70 × 523,409.40
  4. Step 4: Simplify right side
    822,785.40x = 647,065,760,545.98
  5. Step 5: Solve for x
    x = 647,065,760,545.98/822,785.40
  6. Step 6: Final answer
    x = 786,433.21

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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.