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Finding the Fourth Proportional to 663,432.40, 994,559.41 and 258,530.82

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Solution

The fourth proportional to 663,432.40, 994,559.41 and 258,530.82 is: 387,566.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,432.40 : 994,559.41 = 258,530.82 : x
  2. Step 2: Convert to fraction form
    663,432.40/994,559.41 = 258,530.82/x
  3. Step 3: Cross multiply
    663,432.40x = 994,559.41 × 258,530.82
  4. Step 4: Simplify right side
    663,432.40x = 257,124,259,806.02
  5. Step 5: Solve for x
    x = 257,124,259,806.02/663,432.40
  6. Step 6: Final answer
    x = 387,566.63

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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.