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Finding the Fourth Proportional to 663,431.40, 994,557.92 and 258,529.82

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Solution

The fourth proportional to 663,431.40, 994,557.92 and 258,529.82 is: 387,565.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,431.40 : 994,557.92 = 258,529.82 : x
  2. Step 2: Convert to fraction form
    663,431.40/994,557.92 = 258,529.82/x
  3. Step 3: Cross multiply
    663,431.40x = 994,557.92 × 258,529.82
  4. Step 4: Simplify right side
    663,431.40x = 257,122,873,771.74
  5. Step 5: Solve for x
    x = 257,122,873,771.74/663,431.40
  6. Step 6: Final answer
    x = 387,565.13

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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.