Home / 1,431,400.80-1,975,310.88-786,807.24

Finding the Fourth Proportional to 1,431,400.80, 1,975,310.88 and 786,807.24

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Solution

The fourth proportional to 1,431,400.80, 1,975,310.88 and 786,807.24 is: 1,085,781.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,400.80 : 1,975,310.88 = 786,807.24 : x
  2. Step 2: Convert to fraction form
    1,431,400.80/1,975,310.88 = 786,807.24/x
  3. Step 3: Cross multiply
    1,431,400.80x = 1,975,310.88 × 786,807.24
  4. Step 4: Simplify right side
    1,431,400.80x = 1,554,188,901,634.77
  5. Step 5: Solve for x
    x = 1,554,188,901,634.77/1,431,400.80
  6. Step 6: Final answer
    x = 1,085,781.78

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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.