Home / 672,138.45-1,008,207.68-620,816.85

Finding the Fourth Proportional to 672,138.45, 1,008,207.68 and 620,816.85

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Solution

The fourth proportional to 672,138.45, 1,008,207.68 and 620,816.85 is: 931,225.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,138.45 : 1,008,207.68 = 620,816.85 : x
  2. Step 2: Convert to fraction form
    672,138.45/1,008,207.68 = 620,816.85/x
  3. Step 3: Cross multiply
    672,138.45x = 1,008,207.68 × 620,816.85
  4. Step 4: Simplify right side
    672,138.45x = 625,912,312,939.32
  5. Step 5: Solve for x
    x = 625,912,312,939.32/672,138.45
  6. Step 6: Final answer
    x = 931,225.28

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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.