Home / 1,431,916-1,975,993.50-787,331.68

Finding the Fourth Proportional to 1,431,916, 1,975,993.50 and 787,331.68

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Solution

The fourth proportional to 1,431,916, 1,975,993.50 and 787,331.68 is: 1,086,489.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,916 : 1,975,993.50 = 787,331.68 : x
  2. Step 2: Convert to fraction form
    1,431,916/1,975,993.50 = 787,331.68/x
  3. Step 3: Cross multiply
    1,431,916x = 1,975,993.50 × 787,331.68
  4. Step 4: Simplify right side
    1,431,916x = 1,555,762,282,024.08
  5. Step 5: Solve for x
    x = 1,555,762,282,024.08/1,431,916
  6. Step 6: Final answer
    x = 1,086,489.91

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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.