Home / 420,311.54-630,896.19-307,657.13

Finding the Fourth Proportional to 420,311.54, 630,896.19 and 307,657.13

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Solution

The fourth proportional to 420,311.54, 630,896.19 and 307,657.13 is: 461,799.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,311.54 : 630,896.19 = 307,657.13 : x
  2. Step 2: Convert to fraction form
    420,311.54/630,896.19 = 307,657.13/x
  3. Step 3: Cross multiply
    420,311.54x = 630,896.19 × 307,657.13
  4. Step 4: Simplify right side
    420,311.54x = 194,099,711,143.34
  5. Step 5: Solve for x
    x = 194,099,711,143.34/420,311.54
  6. Step 6: Final answer
    x = 461,799.62

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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.