Home / 420,151,781.70-630,227,672.55-267,474,687.30

Finding the Fourth Proportional to 420,151,781.70, 630,227,672.55 and 267,474,687.30

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Solution

The fourth proportional to 420,151,781.70, 630,227,672.55 and 267,474,687.30 is: 401,212,030.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,151,781.70 : 630,227,672.55 = 267,474,687.30 : x
  2. Step 2: Convert to fraction form
    420,151,781.70/630,227,672.55 = 267,474,687.30/x
  3. Step 3: Cross multiply
    420,151,781.70x = 630,227,672.55 × 267,474,687.30
  4. Step 4: Simplify right side
    420,151,781.70x = 168,569,949,643,118,048
  5. Step 5: Solve for x
    x = 168,569,949,643,118,048/420,151,781.70
  6. Step 6: Final answer
    x = 401,212,030.95

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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.