Home / 812,872.52-1,121,752.08-450,295.28

Finding the Fourth Proportional to 812,872.52, 1,121,752.08 and 450,295.28

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Solution

The fourth proportional to 812,872.52, 1,121,752.08 and 450,295.28 is: 621,400.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,872.52 : 1,121,752.08 = 450,295.28 : x
  2. Step 2: Convert to fraction form
    812,872.52/1,121,752.08 = 450,295.28/x
  3. Step 3: Cross multiply
    812,872.52x = 1,121,752.08 × 450,295.28
  4. Step 4: Simplify right side
    812,872.52x = 505,119,666,954.18
  5. Step 5: Solve for x
    x = 505,119,666,954.18/812,872.52
  6. Step 6: Final answer
    x = 621,400.84

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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.