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Finding the Fourth Proportional to 661,269.10, 912,560.43 and 359,469.58

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Solution

The fourth proportional to 661,269.10, 912,560.43 and 359,469.58 is: 496,072.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,269.10 : 912,560.43 = 359,469.58 : x
  2. Step 2: Convert to fraction form
    661,269.10/912,560.43 = 359,469.58/x
  3. Step 3: Cross multiply
    661,269.10x = 912,560.43 × 359,469.58
  4. Step 4: Simplify right side
    661,269.10x = 328,037,714,496.72
  5. Step 5: Solve for x
    x = 328,037,714,496.72/661,269.10
  6. Step 6: Final answer
    x = 496,072.95

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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.