Home / 715,074.13-986,557.87-409,039.02

Finding the Fourth Proportional to 715,074.13, 986,557.87 and 409,039.02

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Solution

The fourth proportional to 715,074.13, 986,557.87 and 409,039.02 is: 564,334.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,074.13 : 986,557.87 = 409,039.02 : x
  2. Step 2: Convert to fraction form
    715,074.13/986,557.87 = 409,039.02/x
  3. Step 3: Cross multiply
    715,074.13x = 986,557.87 × 409,039.02
  4. Step 4: Simplify right side
    715,074.13x = 403,540,664,318.09
  5. Step 5: Solve for x
    x = 403,540,664,318.09/715,074.13
  6. Step 6: Final answer
    x = 564,334.03

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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.