Home / 520,025.10-780,037.65-425,546.70

Finding the Fourth Proportional to 520,025.10, 780,037.65 and 425,546.70

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Solution

The fourth proportional to 520,025.10, 780,037.65 and 425,546.70 is: 638,320.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,025.10 : 780,037.65 = 425,546.70 : x
  2. Step 2: Convert to fraction form
    520,025.10/780,037.65 = 425,546.70/x
  3. Step 3: Cross multiply
    520,025.10x = 780,037.65 × 425,546.70
  4. Step 4: Simplify right side
    520,025.10x = 331,942,447,833.26
  5. Step 5: Solve for x
    x = 331,942,447,833.26/520,025.10
  6. Step 6: Final answer
    x = 638,320.05

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Similar ratio
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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.