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Finding the Fourth Proportional to 625,979.67, 938,653.77 and 445,962.24

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Solution

The fourth proportional to 625,979.67, 938,653.77 and 445,962.24 is: 668,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,979.67 : 938,653.77 = 445,962.24 : x
  2. Step 2: Convert to fraction form
    625,979.67/938,653.77 = 445,962.24/x
  3. Step 3: Cross multiply
    625,979.67x = 938,653.77 × 445,962.24
  4. Step 4: Simplify right side
    625,979.67x = 418,604,137,853.65
  5. Step 5: Solve for x
    x = 418,604,137,853.65/625,979.67
  6. Step 6: Final answer
    x = 668,718.42

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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.