Home / 566,278.59-781,464.58-311,629.78

Finding the Fourth Proportional to 566,278.59, 781,464.58 and 311,629.78

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Solution

The fourth proportional to 566,278.59, 781,464.58 and 311,629.78 is: 430,049.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,278.59 : 781,464.58 = 311,629.78 : x
  2. Step 2: Convert to fraction form
    566,278.59/781,464.58 = 311,629.78/x
  3. Step 3: Cross multiply
    566,278.59x = 781,464.58 × 311,629.78
  4. Step 4: Simplify right side
    566,278.59x = 243,527,631,235.87
  5. Step 5: Solve for x
    x = 243,527,631,235.87/566,278.59
  6. Step 6: Final answer
    x = 430,049.16

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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.