Home / 641,780.02-885,622.75-351,335.91

Finding the Fourth Proportional to 641,780.02, 885,622.75 and 351,335.91

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Solution

The fourth proportional to 641,780.02, 885,622.75 and 351,335.91 is: 484,825.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,780.02 : 885,622.75 = 351,335.91 : x
  2. Step 2: Convert to fraction form
    641,780.02/885,622.75 = 351,335.91/x
  3. Step 3: Cross multiply
    641,780.02x = 885,622.75 × 351,335.91
  4. Step 4: Simplify right side
    641,780.02x = 311,151,073,452.24
  5. Step 5: Solve for x
    x = 311,151,073,452.24/641,780.02
  6. Step 6: Final answer
    x = 484,825.11

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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.