Home / 641,739.72-885,322.82-386,949.36

Finding the Fourth Proportional to 641,739.72, 885,322.82 and 386,949.36

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Solution

The fourth proportional to 641,739.72, 885,322.82 and 386,949.36 is: 533,822.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,739.72 : 885,322.82 = 386,949.36 : x
  2. Step 2: Convert to fraction form
    641,739.72/885,322.82 = 386,949.36/x
  3. Step 3: Cross multiply
    641,739.72x = 885,322.82 × 386,949.36
  4. Step 4: Simplify right side
    641,739.72x = 342,575,098,592.40
  5. Step 5: Solve for x
    x = 342,575,098,592.40/641,739.72
  6. Step 6: Final answer
    x = 533,822.50

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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.