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Finding the Fourth Proportional to 618,586.40, 854,060.40 and 475,090

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Solution

The fourth proportional to 618,586.40, 854,060.40 and 475,090 is: 655,939.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,586.40 : 854,060.40 = 475,090 : x
  2. Step 2: Convert to fraction form
    618,586.40/854,060.40 = 475,090/x
  3. Step 3: Cross multiply
    618,586.40x = 854,060.40 × 475,090
  4. Step 4: Simplify right side
    618,586.40x = 405,755,555,436
  5. Step 5: Solve for x
    x = 405,755,555,436/618,586.40
  6. Step 6: Final answer
    x = 655,939.99

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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.