Home / 638,839.40-958,259.10-587,229.80

Finding the Fourth Proportional to 638,839.40, 958,259.10 and 587,229.80

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Solution

The fourth proportional to 638,839.40, 958,259.10 and 587,229.80 is: 880,844.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,839.40 : 958,259.10 = 587,229.80 : x
  2. Step 2: Convert to fraction form
    638,839.40/958,259.10 = 587,229.80/x
  3. Step 3: Cross multiply
    638,839.40x = 958,259.10 × 587,229.80
  4. Step 4: Simplify right side
    638,839.40x = 562,718,299,641.18
  5. Step 5: Solve for x
    x = 562,718,299,641.18/638,839.40
  6. Step 6: Final answer
    x = 880,844.70

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Double scale
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Similar ratio
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1.5x scale

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.