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Finding the Fourth Proportional to 522,942.66, 721,630.55 and 293,478.52

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Solution

The fourth proportional to 522,942.66, 721,630.55 and 293,478.52 is: 404,983.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,942.66 : 721,630.55 = 293,478.52 : x
  2. Step 2: Convert to fraction form
    522,942.66/721,630.55 = 293,478.52/x
  3. Step 3: Cross multiply
    522,942.66x = 721,630.55 × 293,478.52
  4. Step 4: Simplify right side
    522,942.66x = 211,783,065,800.79
  5. Step 5: Solve for x
    x = 211,783,065,800.79/522,942.66
  6. Step 6: Final answer
    x = 404,983.34

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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.