Home / 709,910.10-979,715.61-387,650.10

Finding the Fourth Proportional to 709,910.10, 979,715.61 and 387,650.10

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Solution

The fourth proportional to 709,910.10, 979,715.61 and 387,650.10 is: 534,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,910.10 : 979,715.61 = 387,650.10 : x
  2. Step 2: Convert to fraction form
    709,910.10/979,715.61 = 387,650.10/x
  3. Step 3: Cross multiply
    709,910.10x = 979,715.61 × 387,650.10
  4. Step 4: Simplify right side
    709,910.10x = 379,786,854,188.06
  5. Step 5: Solve for x
    x = 379,786,854,188.06/709,910.10
  6. Step 6: Final answer
    x = 534,978.80

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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.