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Finding the Fourth Proportional to 520,023.10, 780,034.65 and 296,074.30

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Solution

The fourth proportional to 520,023.10, 780,034.65 and 296,074.30 is: 444,111.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,023.10 : 780,034.65 = 296,074.30 : x
  2. Step 2: Convert to fraction form
    520,023.10/780,034.65 = 296,074.30/x
  3. Step 3: Cross multiply
    520,023.10x = 780,034.65 × 296,074.30
  4. Step 4: Simplify right side
    520,023.10x = 230,948,212,974.50
  5. Step 5: Solve for x
    x = 230,948,212,974.50/520,023.10
  6. Step 6: Final answer
    x = 444,111.45

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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.