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Finding the Fourth Proportional to 1,259,290.22, 1,738,484.99 and 1,011,590.78

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Solution

The fourth proportional to 1,259,290.22, 1,738,484.99 and 1,011,590.78 is: 1,396,529.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,290.22 : 1,738,484.99 = 1,011,590.78 : x
  2. Step 2: Convert to fraction form
    1,259,290.22/1,738,484.99 = 1,011,590.78/x
  3. Step 3: Cross multiply
    1,259,290.22x = 1,738,484.99 × 1,011,590.78
  4. Step 4: Simplify right side
    1,259,290.22x = 1,758,635,387,052.39
  5. Step 5: Solve for x
    x = 1,758,635,387,052.39/1,259,290.22
  6. Step 6: Final answer
    x = 1,396,529.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.