Home / 672,003.40-1,008,005.10-388,568.20

Finding the Fourth Proportional to 672,003.40, 1,008,005.10 and 388,568.20

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Solution

The fourth proportional to 672,003.40, 1,008,005.10 and 388,568.20 is: 582,852.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,003.40 : 1,008,005.10 = 388,568.20 : x
  2. Step 2: Convert to fraction form
    672,003.40/1,008,005.10 = 388,568.20/x
  3. Step 3: Cross multiply
    672,003.40x = 1,008,005.10 × 388,568.20
  4. Step 4: Simplify right side
    672,003.40x = 391,678,727,297.82
  5. Step 5: Solve for x
    x = 391,678,727,297.82/672,003.40
  6. Step 6: Final answer
    x = 582,852.30

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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.