Home / 642,179.28-885,969.48-415,949.52

Finding the Fourth Proportional to 642,179.28, 885,969.48 and 415,949.52

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Solution

The fourth proportional to 642,179.28, 885,969.48 and 415,949.52 is: 573,856.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,179.28 : 885,969.48 = 415,949.52 : x
  2. Step 2: Convert to fraction form
    642,179.28/885,969.48 = 415,949.52/x
  3. Step 3: Cross multiply
    642,179.28x = 885,969.48 × 415,949.52
  4. Step 4: Simplify right side
    642,179.28x = 368,518,579,940.65
  5. Step 5: Solve for x
    x = 368,518,579,940.65/642,179.28
  6. Step 6: Final answer
    x = 573,856.23

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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.