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Finding the Fourth Proportional to 638,843.90, 958,265.85 and 587,234.30

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Solution

The fourth proportional to 638,843.90, 958,265.85 and 587,234.30 is: 880,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,843.90 : 958,265.85 = 587,234.30 : x
  2. Step 2: Convert to fraction form
    638,843.90/958,265.85 = 587,234.30/x
  3. Step 3: Cross multiply
    638,843.90x = 958,265.85 × 587,234.30
  4. Step 4: Simplify right side
    638,843.90x = 562,726,575,638.66
  5. Step 5: Solve for x
    x = 562,726,575,638.66/638,843.90
  6. Step 6: Final answer
    x = 880,851.45

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.