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Finding the Fourth Proportional to 652,223.91, 900,078.30 and 394,065.03

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Solution

The fourth proportional to 652,223.91, 900,078.30 and 394,065.03 is: 543,815.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,223.91 : 900,078.30 = 394,065.03 : x
  2. Step 2: Convert to fraction form
    652,223.91/900,078.30 = 394,065.03/x
  3. Step 3: Cross multiply
    652,223.91x = 900,078.30 × 394,065.03
  4. Step 4: Simplify right side
    652,223.91x = 354,689,382,291.85
  5. Step 5: Solve for x
    x = 354,689,382,291.85/652,223.91
  6. Step 6: Final answer
    x = 543,815.36

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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.