Home / 1,092,136.87-1,638,441.78-418,218.20

Finding the Fourth Proportional to 1,092,136.87, 1,638,441.78 and 418,218.20

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Solution

The fourth proportional to 1,092,136.87, 1,638,441.78 and 418,218.20 is: 627,417.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,136.87 : 1,638,441.78 = 418,218.20 : x
  2. Step 2: Convert to fraction form
    1,092,136.87/1,638,441.78 = 418,218.20/x
  3. Step 3: Cross multiply
    1,092,136.87x = 1,638,441.78 × 418,218.20
  4. Step 4: Simplify right side
    1,092,136.87x = 685,226,175,301.13
  5. Step 5: Solve for x
    x = 685,226,175,301.13/1,092,136.87
  6. Step 6: Final answer
    x = 627,417.86

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Double scale
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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.