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Finding the Fourth Proportional to 663,438.17, 994,568.04 and 258,536.58

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Solution

The fourth proportional to 663,438.17, 994,568.04 and 258,536.58 is: 387,575.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,438.17 : 994,568.04 = 258,536.58 : x
  2. Step 2: Convert to fraction form
    663,438.17/994,568.04 = 258,536.58/x
  3. Step 3: Cross multiply
    663,438.17x = 994,568.04 × 258,536.58
  4. Step 4: Simplify right side
    663,438.17x = 257,132,219,638.90
  5. Step 5: Solve for x
    x = 257,132,219,638.90/663,438.17
  6. Step 6: Final answer
    x = 387,575.26

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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.