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Finding the Fourth Proportional to 390,576.68, 585,860.79 and 296,385.33

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Solution

The fourth proportional to 390,576.68, 585,860.79 and 296,385.33 is: 444,574.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,576.68 : 585,860.79 = 296,385.33 : x
  2. Step 2: Convert to fraction form
    390,576.68/585,860.79 = 296,385.33/x
  3. Step 3: Cross multiply
    390,576.68x = 585,860.79 × 296,385.33
  4. Step 4: Simplify right side
    390,576.68x = 173,640,543,578.21
  5. Step 5: Solve for x
    x = 173,640,543,578.21/390,576.68
  6. Step 6: Final answer
    x = 444,574.79

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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.