Home / 663,128.13-915,116.82-361,322.13

Finding the Fourth Proportional to 663,128.13, 915,116.82 and 361,322.13

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Solution

The fourth proportional to 663,128.13, 915,116.82 and 361,322.13 is: 498,624.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,128.13 : 915,116.82 = 361,322.13 : x
  2. Step 2: Convert to fraction form
    663,128.13/915,116.82 = 361,322.13/x
  3. Step 3: Cross multiply
    663,128.13x = 915,116.82 × 361,322.13
  4. Step 4: Simplify right side
    663,128.13x = 330,651,958,601.23
  5. Step 5: Solve for x
    x = 330,651,958,601.23/663,128.13
  6. Step 6: Final answer
    x = 498,624.54

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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.