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Finding the Fourth Proportional to 638,744.90, 958,117.35 and 587,135.30

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Solution

The fourth proportional to 638,744.90, 958,117.35 and 587,135.30 is: 880,702.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,744.90 : 958,117.35 = 587,135.30 : x
  2. Step 2: Convert to fraction form
    638,744.90/958,117.35 = 587,135.30/x
  3. Step 3: Cross multiply
    638,744.90x = 958,117.35 × 587,135.30
  4. Step 4: Simplify right side
    638,744.90x = 562,544,517,727.46
  5. Step 5: Solve for x
    x = 562,544,517,727.46/638,744.90
  6. Step 6: Final answer
    x = 880,702.95

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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.