Home / 728,117.65-1,091,318.64-328,290.31

Finding the Fourth Proportional to 728,117.65, 1,091,318.64 and 328,290.31

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Solution

The fourth proportional to 728,117.65, 1,091,318.64 and 328,290.31 is: 492,048.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,117.65 : 1,091,318.64 = 328,290.31 : x
  2. Step 2: Convert to fraction form
    728,117.65/1,091,318.64 = 328,290.31/x
  3. Step 3: Cross multiply
    728,117.65x = 1,091,318.64 × 328,290.31
  4. Step 4: Simplify right side
    728,117.65x = 358,269,334,634.38
  5. Step 5: Solve for x
    x = 358,269,334,634.38/728,117.65
  6. Step 6: Final answer
    x = 492,048.69

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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.