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Finding the Fourth Proportional to 678,898.48, 936,896.41 and 372,994.67

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Solution

The fourth proportional to 678,898.48, 936,896.41 and 372,994.67 is: 514,741.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,898.48 : 936,896.41 = 372,994.67 : x
  2. Step 2: Convert to fraction form
    678,898.48/936,896.41 = 372,994.67/x
  3. Step 3: Cross multiply
    678,898.48x = 936,896.41 × 372,994.67
  4. Step 4: Simplify right side
    678,898.48x = 349,457,367,982.52
  5. Step 5: Solve for x
    x = 349,457,367,982.52/678,898.48
  6. Step 6: Final answer
    x = 514,741.72

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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.