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Finding the Fourth Proportional to 612,604.10, 918,306.24 and 342,863.98

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Solution

The fourth proportional to 612,604.10, 918,306.24 and 342,863.98 is: 513,960.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,604.10 : 918,306.24 = 342,863.98 : x
  2. Step 2: Convert to fraction form
    612,604.10/918,306.24 = 342,863.98/x
  3. Step 3: Cross multiply
    612,604.10x = 918,306.24 × 342,863.98
  4. Step 4: Simplify right side
    612,604.10x = 314,854,132,305.24
  5. Step 5: Solve for x
    x = 314,854,132,305.24/612,604.10
  6. Step 6: Final answer
    x = 513,960.21

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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.