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Finding the Fourth Proportional to 691,645.50, 954,470.79 and 373,693.50

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Solution

The fourth proportional to 691,645.50, 954,470.79 and 373,693.50 is: 515,697.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,645.50 : 954,470.79 = 373,693.50 : x
  2. Step 2: Convert to fraction form
    691,645.50/954,470.79 = 373,693.50/x
  3. Step 3: Cross multiply
    691,645.50x = 954,470.79 × 373,693.50
  4. Step 4: Simplify right side
    691,645.50x = 356,679,530,162.87
  5. Step 5: Solve for x
    x = 356,679,530,162.87/691,645.50
  6. Step 6: Final answer
    x = 515,697.03

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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.