Home / 420,519.75-630,876.23-121,002.81

Finding the Fourth Proportional to 420,519.75, 630,876.23 and 121,002.81

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Solution

The fourth proportional to 420,519.75, 630,876.23 and 121,002.81 is: 181,532.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,519.75 : 630,876.23 = 121,002.81 : x
  2. Step 2: Convert to fraction form
    420,519.75/630,876.23 = 121,002.81/x
  3. Step 3: Cross multiply
    420,519.75x = 630,876.23 × 121,002.81
  4. Step 4: Simplify right side
    420,519.75x = 76,337,796,592.21
  5. Step 5: Solve for x
    x = 76,337,796,592.21/420,519.75
  6. Step 6: Final answer
    x = 181,532.01

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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.