Home / 653,861.57-980,786.07-387,430.29

Finding the Fourth Proportional to 653,861.57, 980,786.07 and 387,430.29

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Solution

The fourth proportional to 653,861.57, 980,786.07 and 387,430.29 is: 581,141.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,861.57 : 980,786.07 = 387,430.29 : x
  2. Step 2: Convert to fraction form
    653,861.57/980,786.07 = 387,430.29/x
  3. Step 3: Cross multiply
    653,861.57x = 980,786.07 × 387,430.29
  4. Step 4: Simplify right side
    653,861.57x = 379,986,231,528.06
  5. Step 5: Solve for x
    x = 379,986,231,528.06/653,861.57
  6. Step 6: Final answer
    x = 581,141.72

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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.