Home / 827,138.70-1,240,938.45-406,428.30

Finding the Fourth Proportional to 827,138.70, 1,240,938.45 and 406,428.30

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Solution

The fourth proportional to 827,138.70, 1,240,938.45 and 406,428.30 is: 609,755.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,138.70 : 1,240,938.45 = 406,428.30 : x
  2. Step 2: Convert to fraction form
    827,138.70/1,240,938.45 = 406,428.30/x
  3. Step 3: Cross multiply
    827,138.70x = 1,240,938.45 × 406,428.30
  4. Step 4: Simplify right side
    827,138.70x = 504,352,504,638.14
  5. Step 5: Solve for x
    x = 504,352,504,638.14/827,138.70
  6. Step 6: Final answer
    x = 609,755.66

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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.