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Finding the Fourth Proportional to 978,832.42, 1,351,367.85 and 616,566.80

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Solution

The fourth proportional to 978,832.42, 1,351,367.85 and 616,566.80 is: 851,226.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,832.42 : 1,351,367.85 = 616,566.80 : x
  2. Step 2: Convert to fraction form
    978,832.42/1,351,367.85 = 616,566.80/x
  3. Step 3: Cross multiply
    978,832.42x = 1,351,367.85 × 616,566.80
  4. Step 4: Simplify right side
    978,832.42x = 833,208,556,587.93
  5. Step 5: Solve for x
    x = 833,208,556,587.93/978,832.42
  6. Step 6: Final answer
    x = 851,226.97

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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.