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Finding the Fourth Proportional to 618,587.40, 854,061.78 and 475,091

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Solution

The fourth proportional to 618,587.40, 854,061.78 and 475,091 is: 655,941.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,587.40 : 854,061.78 = 475,091 : x
  2. Step 2: Convert to fraction form
    618,587.40/854,061.78 = 475,091/x
  3. Step 3: Cross multiply
    618,587.40x = 854,061.78 × 475,091
  4. Step 4: Simplify right side
    618,587.40x = 405,757,065,121.98
  5. Step 5: Solve for x
    x = 405,757,065,121.98/618,587.40
  6. Step 6: Final answer
    x = 655,941.37

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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.