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Finding the Fourth Proportional to 678,898.08, 936,879.73 and 372,994.20

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Solution

The fourth proportional to 678,898.08, 936,879.73 and 372,994.20 is: 514,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,898.08 : 936,879.73 = 372,994.20 : x
  2. Step 2: Convert to fraction form
    678,898.08/936,879.73 = 372,994.20/x
  3. Step 3: Cross multiply
    678,898.08x = 936,879.73 × 372,994.20
  4. Step 4: Simplify right side
    678,898.08x = 349,450,704,455.08
  5. Step 5: Solve for x
    x = 349,450,704,455.08/678,898.08
  6. Step 6: Final answer
    x = 514,732.20

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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.