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Finding the Fourth Proportional to 522,336.82, 720,974.29 and 307,601.45

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Solution

The fourth proportional to 522,336.82, 720,974.29 and 307,601.45 is: 424,578.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,336.82 : 720,974.29 = 307,601.45 : x
  2. Step 2: Convert to fraction form
    522,336.82/720,974.29 = 307,601.45/x
  3. Step 3: Cross multiply
    522,336.82x = 720,974.29 × 307,601.45
  4. Step 4: Simplify right side
    522,336.82x = 221,772,737,016.72
  5. Step 5: Solve for x
    x = 221,772,737,016.72/522,336.82
  6. Step 6: Final answer
    x = 424,578.03

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1.5x scale

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.