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Finding the Fourth Proportional to 500,552.72, 690,593.68 and 285,541.48

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Solution

The fourth proportional to 500,552.72, 690,593.68 and 285,541.48 is: 393,950.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,552.72 : 690,593.68 = 285,541.48 : x
  2. Step 2: Convert to fraction form
    500,552.72/690,593.68 = 285,541.48/x
  3. Step 3: Cross multiply
    500,552.72x = 690,593.68 × 285,541.48
  4. Step 4: Simplify right side
    500,552.72x = 197,193,141,465.85
  5. Step 5: Solve for x
    x = 197,193,141,465.85/500,552.72
  6. Step 6: Final answer
    x = 393,950.79

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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.