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Finding the Fourth Proportional to 520,025.64, 780,169.68 and 239,739.72

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Solution

The fourth proportional to 520,025.64, 780,169.68 and 239,739.72 is: 359,670.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,025.64 : 780,169.68 = 239,739.72 : x
  2. Step 2: Convert to fraction form
    520,025.64/780,169.68 = 239,739.72/x
  3. Step 3: Cross multiply
    520,025.64x = 780,169.68 × 239,739.72
  4. Step 4: Simplify right side
    520,025.64x = 187,037,660,635.69
  5. Step 5: Solve for x
    x = 187,037,660,635.69/520,025.64
  6. Step 6: Final answer
    x = 359,670.07

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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.