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Finding the Fourth Proportional to 812,674.56, 1,118,924.91 and 715,818

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Solution

The fourth proportional to 812,674.56, 1,118,924.91 and 715,818 is: 985,568.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,674.56 : 1,118,924.91 = 715,818 : x
  2. Step 2: Convert to fraction form
    812,674.56/1,118,924.91 = 715,818/x
  3. Step 3: Cross multiply
    812,674.56x = 1,118,924.91 × 715,818
  4. Step 4: Simplify right side
    812,674.56x = 800,946,591,226.38
  5. Step 5: Solve for x
    x = 800,946,591,226.38/812,674.56
  6. Step 6: Final answer
    x = 985,568.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.