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Finding the Fourth Proportional to 426,506.52, 639,891.18 and 306,833.88

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Solution

The fourth proportional to 426,506.52, 639,891.18 and 306,833.88 is: 460,345.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,506.52 : 639,891.18 = 306,833.88 : x
  2. Step 2: Convert to fraction form
    426,506.52/639,891.18 = 306,833.88/x
  3. Step 3: Cross multiply
    426,506.52x = 639,891.18 × 306,833.88
  4. Step 4: Simplify right side
    426,506.52x = 196,340,293,537.18
  5. Step 5: Solve for x
    x = 196,340,293,537.18/426,506.52
  6. Step 6: Final answer
    x = 460,345.35

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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.