Home / 681,186.24-1,020,728.16-431,343.36

Finding the Fourth Proportional to 681,186.24, 1,020,728.16 and 431,343.36

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Solution

The fourth proportional to 681,186.24, 1,020,728.16 and 431,343.36 is: 646,349.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,186.24 : 1,020,728.16 = 431,343.36 : x
  2. Step 2: Convert to fraction form
    681,186.24/1,020,728.16 = 431,343.36/x
  3. Step 3: Cross multiply
    681,186.24x = 1,020,728.16 × 431,343.36
  4. Step 4: Simplify right side
    681,186.24x = 440,284,314,181.02
  5. Step 5: Solve for x
    x = 440,284,314,181.02/681,186.24
  6. Step 6: Final answer
    x = 646,349.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.