Home / 420,022.68-630,036.30-104,479.59

Finding the Fourth Proportional to 420,022.68, 630,036.30 and 104,479.59

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Solution

The fourth proportional to 420,022.68, 630,036.30 and 104,479.59 is: 156,719.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,022.68 : 630,036.30 = 104,479.59 : x
  2. Step 2: Convert to fraction form
    420,022.68/630,036.30 = 104,479.59/x
  3. Step 3: Cross multiply
    420,022.68x = 630,036.30 × 104,479.59
  4. Step 4: Simplify right side
    420,022.68x = 65,825,934,309.12
  5. Step 5: Solve for x
    x = 65,825,934,309.12/420,022.68
  6. Step 6: Final answer
    x = 156,719.95

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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.