Home / 1,431,883.76-1,976,006.81-787,345.43

Finding the Fourth Proportional to 1,431,883.76, 1,976,006.81 and 787,345.43

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Solution

The fourth proportional to 1,431,883.76, 1,976,006.81 and 787,345.43 is: 1,086,540.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,883.76 : 1,976,006.81 = 787,345.43 : x
  2. Step 2: Convert to fraction form
    1,431,883.76/1,976,006.81 = 787,345.43/x
  3. Step 3: Cross multiply
    1,431,883.76x = 1,976,006.81 × 787,345.43
  4. Step 4: Simplify right side
    1,431,883.76x = 1,555,799,923,590.71
  5. Step 5: Solve for x
    x = 1,555,799,923,590.71/1,431,883.76
  6. Step 6: Final answer
    x = 1,086,540.66

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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.