Home / 663,701.50-915,908.07-361,896.22

Finding the Fourth Proportional to 663,701.50, 915,908.07 and 361,896.22

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Solution

The fourth proportional to 663,701.50, 915,908.07 and 361,896.22 is: 499,416.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,701.50 : 915,908.07 = 361,896.22 : x
  2. Step 2: Convert to fraction form
    663,701.50/915,908.07 = 361,896.22/x
  3. Step 3: Cross multiply
    663,701.50x = 915,908.07 × 361,896.22
  4. Step 4: Simplify right side
    663,701.50x = 331,463,668,400.50
  5. Step 5: Solve for x
    x = 331,463,668,400.50/663,701.50
  6. Step 6: Final answer
    x = 499,416.78

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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.