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Finding the Fourth Proportional to 678,898.84, 936,880.76 and 372,994.94

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Solution

The fourth proportional to 678,898.84, 936,880.76 and 372,994.94 is: 514,733.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,898.84 : 936,880.76 = 372,994.94 : x
  2. Step 2: Convert to fraction form
    678,898.84/936,880.76 = 372,994.94/x
  3. Step 3: Cross multiply
    678,898.84x = 936,880.76 × 372,994.94
  4. Step 4: Simplify right side
    678,898.84x = 349,451,782,863.35
  5. Step 5: Solve for x
    x = 349,451,782,863.35/678,898.84
  6. Step 6: Final answer
    x = 514,733.22

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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.