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Finding the Fourth Proportional to 657,978.70, 985,655.85 and 377,167.90

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Solution

The fourth proportional to 657,978.70, 985,655.85 and 377,167.90 is: 564,999.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,978.70 : 985,655.85 = 377,167.90 : x
  2. Step 2: Convert to fraction form
    657,978.70/985,655.85 = 377,167.90/x
  3. Step 3: Cross multiply
    657,978.70x = 985,655.85 × 377,167.90
  4. Step 4: Simplify right side
    657,978.70x = 371,757,747,067.22
  5. Step 5: Solve for x
    x = 371,757,747,067.22/657,978.70
  6. Step 6: Final answer
    x = 564,999.67

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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.