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Finding the Fourth Proportional to 520,310.52, 780,447.90 and 220,598.10

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Solution

The fourth proportional to 520,310.52, 780,447.90 and 220,598.10 is: 330,889.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,310.52 : 780,447.90 = 220,598.10 : x
  2. Step 2: Convert to fraction form
    520,310.52/780,447.90 = 220,598.10/x
  3. Step 3: Cross multiply
    520,310.52x = 780,447.90 × 220,598.10
  4. Step 4: Simplify right side
    520,310.52x = 172,165,323,888.99
  5. Step 5: Solve for x
    x = 172,165,323,888.99/520,310.52
  6. Step 6: Final answer
    x = 330,889.57

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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.