Home / 641,743.47-885,327.92-386,953.11

Finding the Fourth Proportional to 641,743.47, 885,327.92 and 386,953.11

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Solution

The fourth proportional to 641,743.47, 885,327.92 and 386,953.11 is: 533,827.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,743.47 : 885,327.92 = 386,953.11 : x
  2. Step 2: Convert to fraction form
    641,743.47/885,327.92 = 386,953.11/x
  3. Step 3: Cross multiply
    641,743.47x = 885,327.92 × 386,953.11
  4. Step 4: Simplify right side
    641,743.47x = 342,580,390,079.07
  5. Step 5: Solve for x
    x = 342,580,390,079.07/641,743.47
  6. Step 6: Final answer
    x = 533,827.62

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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.