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Finding the Fourth Proportional to 500,553.72, 690,595.06 and 285,542.48

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Solution

The fourth proportional to 500,553.72, 690,595.06 and 285,542.48 is: 393,952.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,553.72 : 690,595.06 = 285,542.48 : x
  2. Step 2: Convert to fraction form
    500,553.72/690,595.06 = 285,542.48/x
  3. Step 3: Cross multiply
    500,553.72x = 690,595.06 × 285,542.48
  4. Step 4: Simplify right side
    500,553.72x = 197,194,226,108.15
  5. Step 5: Solve for x
    x = 197,194,226,108.15/500,553.72
  6. Step 6: Final answer
    x = 393,952.17

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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.