Home / 816,578.65-1,225,116.96-417,499.66

Finding the Fourth Proportional to 816,578.65, 1,225,116.96 and 417,499.66

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Solution

The fourth proportional to 816,578.65, 1,225,116.96 and 417,499.66 is: 626,376.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,578.65 : 1,225,116.96 = 417,499.66 : x
  2. Step 2: Convert to fraction form
    816,578.65/1,225,116.96 = 417,499.66/x
  3. Step 3: Cross multiply
    816,578.65x = 1,225,116.96 × 417,499.66
  4. Step 4: Simplify right side
    816,578.65x = 511,485,914,260.23
  5. Step 5: Solve for x
    x = 511,485,914,260.23/816,578.65
  6. Step 6: Final answer
    x = 626,376.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.