Home / 825,020.79-1,138,471.10-457,516.55

Finding the Fourth Proportional to 825,020.79, 1,138,471.10 and 457,516.55

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Solution

The fourth proportional to 825,020.79, 1,138,471.10 and 457,516.55 is: 631,340.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,020.79 : 1,138,471.10 = 457,516.55 : x
  2. Step 2: Convert to fraction form
    825,020.79/1,138,471.10 = 457,516.55/x
  3. Step 3: Cross multiply
    825,020.79x = 1,138,471.10 × 457,516.55
  4. Step 4: Simplify right side
    825,020.79x = 520,869,372,220.99
  5. Step 5: Solve for x
    x = 520,869,372,220.99/825,020.79
  6. Step 6: Final answer
    x = 631,340.90

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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.