Home / 1,187,593.85-1,638,835.60-643,717.96

Finding the Fourth Proportional to 1,187,593.85, 1,638,835.60 and 643,717.96

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Solution

The fourth proportional to 1,187,593.85, 1,638,835.60 and 643,717.96 is: 888,306.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,593.85 : 1,638,835.60 = 643,717.96 : x
  2. Step 2: Convert to fraction form
    1,187,593.85/1,638,835.60 = 643,717.96/x
  3. Step 3: Cross multiply
    1,187,593.85x = 1,638,835.60 × 643,717.96
  4. Step 4: Simplify right side
    1,187,593.85x = 1,054,947,909,207.38
  5. Step 5: Solve for x
    x = 1,054,947,909,207.38/1,187,593.85
  6. Step 6: Final answer
    x = 888,306.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.