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Finding the Fourth Proportional to 663,922.36, 995,373.06 and 343,730.98

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Solution

The fourth proportional to 663,922.36, 995,373.06 and 343,730.98 is: 515,332.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,922.36 : 995,373.06 = 343,730.98 : x
  2. Step 2: Convert to fraction form
    663,922.36/995,373.06 = 343,730.98/x
  3. Step 3: Cross multiply
    663,922.36x = 995,373.06 × 343,730.98
  4. Step 4: Simplify right side
    663,922.36x = 342,140,557,379.40
  5. Step 5: Solve for x
    x = 342,140,557,379.40/663,922.36
  6. Step 6: Final answer
    x = 515,332.18

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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.