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Finding the Fourth Proportional to 520,302.24, 780,435.54 and 220,589.82

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Solution

The fourth proportional to 520,302.24, 780,435.54 and 220,589.82 is: 330,877.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,302.24 : 780,435.54 = 220,589.82 : x
  2. Step 2: Convert to fraction form
    520,302.24/780,435.54 = 220,589.82/x
  3. Step 3: Cross multiply
    520,302.24x = 780,435.54 × 220,589.82
  4. Step 4: Simplify right side
    520,302.24x = 172,156,135,290.20
  5. Step 5: Solve for x
    x = 172,156,135,290.20/520,302.24
  6. Step 6: Final answer
    x = 330,877.17

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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.