Home / 672,942.80-1,008,053.40-419,445.20

Finding the Fourth Proportional to 672,942.80, 1,008,053.40 and 419,445.20

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Solution

The fourth proportional to 672,942.80, 1,008,053.40 and 419,445.20 is: 628,319.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,942.80 : 1,008,053.40 = 419,445.20 : x
  2. Step 2: Convert to fraction form
    672,942.80/1,008,053.40 = 419,445.20/x
  3. Step 3: Cross multiply
    672,942.80x = 1,008,053.40 × 419,445.20
  4. Step 4: Simplify right side
    672,942.80x = 422,823,159,973.68
  5. Step 5: Solve for x
    x = 422,823,159,973.68/672,942.80
  6. Step 6: Final answer
    x = 628,319.61

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1.5x scale

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.