Home / 672,908.80-1,008,002.40-419,411.20

Finding the Fourth Proportional to 672,908.80, 1,008,002.40 and 419,411.20

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Solution

The fourth proportional to 672,908.80, 1,008,002.40 and 419,411.20 is: 628,268.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,908.80 : 1,008,002.40 = 419,411.20 : x
  2. Step 2: Convert to fraction form
    672,908.80/1,008,002.40 = 419,411.20/x
  3. Step 3: Cross multiply
    672,908.80x = 1,008,002.40 × 419,411.20
  4. Step 4: Simplify right side
    672,908.80x = 422,767,496,186.88
  5. Step 5: Solve for x
    x = 422,767,496,186.88/672,908.80
  6. Step 6: Final answer
    x = 628,268.64

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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.