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Finding the Fourth Proportional to 618,856.50, 854,021.97 and 350,584.50

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Solution

The fourth proportional to 618,856.50, 854,021.97 and 350,584.50 is: 483,806.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,856.50 : 854,021.97 = 350,584.50 : x
  2. Step 2: Convert to fraction form
    618,856.50/854,021.97 = 350,584.50/x
  3. Step 3: Cross multiply
    618,856.50x = 854,021.97 × 350,584.50
  4. Step 4: Simplify right side
    618,856.50x = 299,406,865,341.47
  5. Step 5: Solve for x
    x = 299,406,865,341.47/618,856.50
  6. Step 6: Final answer
    x = 483,806.61

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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.