Home / 400,972.32-552,079.44-340,423.20

Finding the Fourth Proportional to 400,972.32, 552,079.44 and 340,423.20

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Solution

The fourth proportional to 400,972.32, 552,079.44 and 340,423.20 is: 468,712.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,972.32 : 552,079.44 = 340,423.20 : x
  2. Step 2: Convert to fraction form
    400,972.32/552,079.44 = 340,423.20/x
  3. Step 3: Cross multiply
    400,972.32x = 552,079.44 × 340,423.20
  4. Step 4: Simplify right side
    400,972.32x = 187,940,649,619.01
  5. Step 5: Solve for x
    x = 187,940,649,619.01/400,972.32
  6. Step 6: Final answer
    x = 468,712.28

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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.