Home / 1,431,872.82-1,975,931.35-787,254.66

Finding the Fourth Proportional to 1,431,872.82, 1,975,931.35 and 787,254.66

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Solution

The fourth proportional to 1,431,872.82, 1,975,931.35 and 787,254.66 is: 1,086,382.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,872.82 : 1,975,931.35 = 787,254.66 : x
  2. Step 2: Convert to fraction form
    1,431,872.82/1,975,931.35 = 787,254.66/x
  3. Step 3: Cross multiply
    1,431,872.82x = 1,975,931.35 × 787,254.66
  4. Step 4: Simplify right side
    1,431,872.82x = 1,555,561,163,127.59
  5. Step 5: Solve for x
    x = 1,555,561,163,127.59/1,431,872.82
  6. Step 6: Final answer
    x = 1,086,382.21

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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.