Home / 715,178.97-986,776.83-405,084.24

Finding the Fourth Proportional to 715,178.97, 986,776.83 and 405,084.24

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Solution

The fourth proportional to 715,178.97, 986,776.83 and 405,084.24 is: 558,919.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,178.97 : 986,776.83 = 405,084.24 : x
  2. Step 2: Convert to fraction form
    715,178.97/986,776.83 = 405,084.24/x
  3. Step 3: Cross multiply
    715,178.97x = 986,776.83 × 405,084.24
  4. Step 4: Simplify right side
    715,178.97x = 399,727,742,230.16
  5. Step 5: Solve for x
    x = 399,727,742,230.16/715,178.97
  6. Step 6: Final answer
    x = 558,919.88

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1.5x scale

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.