Home / 824,777.46-1,138,139.01-485,180.10

Finding the Fourth Proportional to 824,777.46, 1,138,139.01 and 485,180.10

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Solution

The fourth proportional to 824,777.46, 1,138,139.01 and 485,180.10 is: 669,516.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,777.46 : 1,138,139.01 = 485,180.10 : x
  2. Step 2: Convert to fraction form
    824,777.46/1,138,139.01 = 485,180.10/x
  3. Step 3: Cross multiply
    824,777.46x = 1,138,139.01 × 485,180.10
  4. Step 4: Simplify right side
    824,777.46x = 552,202,398,685.70
  5. Step 5: Solve for x
    x = 552,202,398,685.70/824,777.46
  6. Step 6: Final answer
    x = 669,516.84

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Double scale
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Similar ratio
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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.