Home / 1,092,123.40-1,638,185.10-905,499.40

Finding the Fourth Proportional to 1,092,123.40, 1,638,185.10 and 905,499.40

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Solution

The fourth proportional to 1,092,123.40, 1,638,185.10 and 905,499.40 is: 1,358,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,123.40 : 1,638,185.10 = 905,499.40 : x
  2. Step 2: Convert to fraction form
    1,092,123.40/1,638,185.10 = 905,499.40/x
  3. Step 3: Cross multiply
    1,092,123.40x = 1,638,185.10 × 905,499.40
  4. Step 4: Simplify right side
    1,092,123.40x = 1,483,375,625,138.94
  5. Step 5: Solve for x
    x = 1,483,375,625,138.94/1,092,123.40
  6. Step 6: Final answer
    x = 1,358,249.10

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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.