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Finding the Fourth Proportional to 678,977.92, 936,990 and 373,073.92

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Solution

The fourth proportional to 678,977.92, 936,990 and 373,073.92 is: 514,842.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,977.92 : 936,990 = 373,073.92 : x
  2. Step 2: Convert to fraction form
    678,977.92/936,990 = 373,073.92/x
  3. Step 3: Cross multiply
    678,977.92x = 936,990 × 373,073.92
  4. Step 4: Simplify right side
    678,977.92x = 349,566,532,300.80
  5. Step 5: Solve for x
    x = 349,566,532,300.80/678,977.92
  6. Step 6: Final answer
    x = 514,842.27

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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.