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Finding the Fourth Proportional to 516,074.10, 774,111.15 and 327,117.30

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Solution

The fourth proportional to 516,074.10, 774,111.15 and 327,117.30 is: 490,675.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,074.10 : 774,111.15 = 327,117.30 : x
  2. Step 2: Convert to fraction form
    516,074.10/774,111.15 = 327,117.30/x
  3. Step 3: Cross multiply
    516,074.10x = 774,111.15 × 327,117.30
  4. Step 4: Simplify right side
    516,074.10x = 253,225,149,287.90
  5. Step 5: Solve for x
    x = 253,225,149,287.90/516,074.10
  6. Step 6: Final answer
    x = 490,675.95

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Double scale
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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.