Home / 639,762.91-883,068.28-394,822.55

Finding the Fourth Proportional to 639,762.91, 883,068.28 and 394,822.55

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Solution

The fourth proportional to 639,762.91, 883,068.28 and 394,822.55 is: 544,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,762.91 : 883,068.28 = 394,822.55 : x
  2. Step 2: Convert to fraction form
    639,762.91/883,068.28 = 394,822.55/x
  3. Step 3: Cross multiply
    639,762.91x = 883,068.28 × 394,822.55
  4. Step 4: Simplify right side
    639,762.91x = 348,655,271,354.33
  5. Step 5: Solve for x
    x = 348,655,271,354.33/639,762.91
  6. Step 6: Final answer
    x = 544,975.75

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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.