Home / 639,987.03-883,165.16-353,500.95

Finding the Fourth Proportional to 639,987.03, 883,165.16 and 353,500.95

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Solution

The fourth proportional to 639,987.03, 883,165.16 and 353,500.95 is: 487,821.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,987.03 : 883,165.16 = 353,500.95 : x
  2. Step 2: Convert to fraction form
    639,987.03/883,165.16 = 353,500.95/x
  3. Step 3: Cross multiply
    639,987.03x = 883,165.16 × 353,500.95
  4. Step 4: Simplify right side
    639,987.03x = 312,199,721,299.40
  5. Step 5: Solve for x
    x = 312,199,721,299.40/639,987.03
  6. Step 6: Final answer
    x = 487,821.95

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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.