Home / 1,330,458.78-1,995,659.82-431,899.06

Finding the Fourth Proportional to 1,330,458.78, 1,995,659.82 and 431,899.06

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Solution

The fourth proportional to 1,330,458.78, 1,995,659.82 and 431,899.06 is: 647,839.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,458.78 : 1,995,659.82 = 431,899.06 : x
  2. Step 2: Convert to fraction form
    1,330,458.78/1,995,659.82 = 431,899.06/x
  3. Step 3: Cross multiply
    1,330,458.78x = 1,995,659.82 × 431,899.06
  4. Step 4: Simplify right side
    1,330,458.78x = 861,923,600,337.77
  5. Step 5: Solve for x
    x = 861,923,600,337.77/1,330,458.78
  6. Step 6: Final answer
    x = 647,839.39

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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.