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Finding the Fourth Proportional to 586,886.73, 809,891.50 and 318,614.73

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Solution

The fourth proportional to 586,886.73, 809,891.50 and 318,614.73 is: 439,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,886.73 : 809,891.50 = 318,614.73 : x
  2. Step 2: Convert to fraction form
    586,886.73/809,891.50 = 318,614.73/x
  3. Step 3: Cross multiply
    586,886.73x = 809,891.50 × 318,614.73
  4. Step 4: Simplify right side
    586,886.73x = 258,043,361,601.80
  5. Step 5: Solve for x
    x = 258,043,361,601.80/586,886.73
  6. Step 6: Final answer
    x = 439,681.71

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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.