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Finding the Fourth Proportional to 528,346.43, 729,186.84 and 295,861.90

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Solution

The fourth proportional to 528,346.43, 729,186.84 and 295,861.90 is: 408,327.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,346.43 : 729,186.84 = 295,861.90 : x
  2. Step 2: Convert to fraction form
    528,346.43/729,186.84 = 295,861.90/x
  3. Step 3: Cross multiply
    528,346.43x = 729,186.84 × 295,861.90
  4. Step 4: Simplify right side
    528,346.43x = 215,738,603,937.40
  5. Step 5: Solve for x
    x = 215,738,603,937.40/528,346.43
  6. Step 6: Final answer
    x = 408,327.93

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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.