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Finding the Fourth Proportional to 571,901.70, 856,883.78 and 379,641.85

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Solution

The fourth proportional to 571,901.70, 856,883.78 and 379,641.85 is: 568,819.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,901.70 : 856,883.78 = 379,641.85 : x
  2. Step 2: Convert to fraction form
    571,901.70/856,883.78 = 379,641.85/x
  3. Step 3: Cross multiply
    571,901.70x = 856,883.78 × 379,641.85
  4. Step 4: Simplify right side
    571,901.70x = 325,308,945,677.40
  5. Step 5: Solve for x
    x = 325,308,945,677.40/571,901.70
  6. Step 6: Final answer
    x = 568,819.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.