Home / 681,092.70-1,021,639.05-429,150.30

Finding the Fourth Proportional to 681,092.70, 1,021,639.05 and 429,150.30

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Solution

The fourth proportional to 681,092.70, 1,021,639.05 and 429,150.30 is: 643,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,092.70 : 1,021,639.05 = 429,150.30 : x
  2. Step 2: Convert to fraction form
    681,092.70/1,021,639.05 = 429,150.30/x
  3. Step 3: Cross multiply
    681,092.70x = 1,021,639.05 × 429,150.30
  4. Step 4: Simplify right side
    681,092.70x = 438,436,704,799.22
  5. Step 5: Solve for x
    x = 438,436,704,799.22/681,092.70
  6. Step 6: Final answer
    x = 643,725.45

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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.