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Finding the Fourth Proportional to 579,058.96, 868,044.12 and 312,419.92

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Solution

The fourth proportional to 579,058.96, 868,044.12 and 312,419.92 is: 468,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,058.96 : 868,044.12 = 312,419.92 : x
  2. Step 2: Convert to fraction form
    579,058.96/868,044.12 = 312,419.92/x
  3. Step 3: Cross multiply
    579,058.96x = 868,044.12 × 312,419.92
  4. Step 4: Simplify right side
    579,058.96x = 271,194,274,526.87
  5. Step 5: Solve for x
    x = 271,194,274,526.87/579,058.96
  6. Step 6: Final answer
    x = 468,336.20

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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.