Home / 666,221.40-1,000,109.70-382,138.20

Finding the Fourth Proportional to 666,221.40, 1,000,109.70 and 382,138.20

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Solution

The fourth proportional to 666,221.40, 1,000,109.70 and 382,138.20 is: 573,653.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,221.40 : 1,000,109.70 = 382,138.20 : x
  2. Step 2: Convert to fraction form
    666,221.40/1,000,109.70 = 382,138.20/x
  3. Step 3: Cross multiply
    666,221.40x = 1,000,109.70 × 382,138.20
  4. Step 4: Simplify right side
    666,221.40x = 382,180,120,560.54
  5. Step 5: Solve for x
    x = 382,180,120,560.54/666,221.40
  6. Step 6: Final answer
    x = 573,653.32

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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.