Home / 639,763.91-883,069.66-394,823.55

Finding the Fourth Proportional to 639,763.91, 883,069.66 and 394,823.55

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Solution

The fourth proportional to 639,763.91, 883,069.66 and 394,823.55 is: 544,977.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,763.91 : 883,069.66 = 394,823.55 : x
  2. Step 2: Convert to fraction form
    639,763.91/883,069.66 = 394,823.55/x
  3. Step 3: Cross multiply
    639,763.91x = 883,069.66 × 394,823.55
  4. Step 4: Simplify right side
    639,763.91x = 348,656,698,058.49
  5. Step 5: Solve for x
    x = 348,656,698,058.49/639,763.91
  6. Step 6: Final answer
    x = 544,977.13

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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.