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Finding the Fourth Proportional to 572,367.82, 789,949.77 and 342,934.21

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Solution

The fourth proportional to 572,367.82, 789,949.77 and 342,934.21 is: 473,298.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,367.82 : 789,949.77 = 342,934.21 : x
  2. Step 2: Convert to fraction form
    572,367.82/789,949.77 = 342,934.21/x
  3. Step 3: Cross multiply
    572,367.82x = 789,949.77 × 342,934.21
  4. Step 4: Simplify right side
    572,367.82x = 270,900,800,314.63
  5. Step 5: Solve for x
    x = 270,900,800,314.63/572,367.82
  6. Step 6: Final answer
    x = 473,298.45

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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.