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Finding the Fourth Proportional to 612,876.93, 918,518.94 and 342,993.84

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Solution

The fourth proportional to 612,876.93, 918,518.94 and 342,993.84 is: 514,045.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,876.93 : 918,518.94 = 342,993.84 : x
  2. Step 2: Convert to fraction form
    612,876.93/918,518.94 = 342,993.84/x
  3. Step 3: Cross multiply
    612,876.93x = 918,518.94 × 342,993.84
  4. Step 4: Simplify right side
    612,876.93x = 315,046,338,343.33
  5. Step 5: Solve for x
    x = 315,046,338,343.33/612,876.93
  6. Step 6: Final answer
    x = 514,045.03

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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.