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Finding the Fourth Proportional to 612,479.44, 918,841.79 and 342,990.82

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Solution

The fourth proportional to 612,479.44, 918,841.79 and 342,990.82 is: 514,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,479.44 : 918,841.79 = 342,990.82 : x
  2. Step 2: Convert to fraction form
    612,479.44/918,841.79 = 342,990.82/x
  3. Step 3: Cross multiply
    612,479.44x = 918,841.79 × 342,990.82
  4. Step 4: Simplify right side
    612,479.44x = 315,154,294,408.16
  5. Step 5: Solve for x
    x = 315,154,294,408.16/612,479.44
  6. Step 6: Final answer
    x = 514,554.90

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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.