Home / 664,857.28-917,470.08-378,402.24

Finding the Fourth Proportional to 664,857.28, 917,470.08 and 378,402.24

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Solution

The fourth proportional to 664,857.28, 917,470.08 and 378,402.24 is: 522,176.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,857.28 : 917,470.08 = 378,402.24 : x
  2. Step 2: Convert to fraction form
    664,857.28/917,470.08 = 378,402.24/x
  3. Step 3: Cross multiply
    664,857.28x = 917,470.08 × 378,402.24
  4. Step 4: Simplify right side
    664,857.28x = 347,172,733,404.98
  5. Step 5: Solve for x
    x = 347,172,733,404.98/664,857.28
  6. Step 6: Final answer
    x = 522,176.33

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1.5x scale

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.