Home / 672,019.70-1,008,029.55-423,187.70

Finding the Fourth Proportional to 672,019.70, 1,008,029.55 and 423,187.70

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Solution

The fourth proportional to 672,019.70, 1,008,029.55 and 423,187.70 is: 634,781.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,019.70 : 1,008,029.55 = 423,187.70 : x
  2. Step 2: Convert to fraction form
    672,019.70/1,008,029.55 = 423,187.70/x
  3. Step 3: Cross multiply
    672,019.70x = 1,008,029.55 × 423,187.70
  4. Step 4: Simplify right side
    672,019.70x = 426,585,706,796.54
  5. Step 5: Solve for x
    x = 426,585,706,796.54/672,019.70
  6. Step 6: Final answer
    x = 634,781.55

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Similar ratio
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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.