Home / 812,946.96-1,121,821.92-450,342

Finding the Fourth Proportional to 812,946.96, 1,121,821.92 and 450,342

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Solution

The fourth proportional to 812,946.96, 1,121,821.92 and 450,342 is: 621,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,946.96 : 1,121,821.92 = 450,342 : x
  2. Step 2: Convert to fraction form
    812,946.96/1,121,821.92 = 450,342/x
  3. Step 3: Cross multiply
    812,946.96x = 1,121,821.92 × 450,342
  4. Step 4: Simplify right side
    812,946.96x = 505,203,527,096.64
  5. Step 5: Solve for x
    x = 505,203,527,096.64/812,946.96
  6. Step 6: Final answer
    x = 621,447.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.