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Finding the Fourth Proportional to 520,582.77, 718,481.21 and 329,613.93

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Solution

The fourth proportional to 520,582.77, 718,481.21 and 329,613.93 is: 454,915.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,582.77 : 718,481.21 = 329,613.93 : x
  2. Step 2: Convert to fraction form
    520,582.77/718,481.21 = 329,613.93/x
  3. Step 3: Cross multiply
    520,582.77x = 718,481.21 × 329,613.93
  4. Step 4: Simplify right side
    520,582.77x = 236,821,413,611.19
  5. Step 5: Solve for x
    x = 236,821,413,611.19/520,582.77
  6. Step 6: Final answer
    x = 454,915.97

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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.