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Finding the Fourth Proportional to 678,937.84, 936,949.86 and 373,033.31

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Solution

The fourth proportional to 678,937.84, 936,949.86 and 373,033.31 is: 514,794.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,937.84 : 936,949.86 = 373,033.31 : x
  2. Step 2: Convert to fraction form
    678,937.84/936,949.86 = 373,033.31/x
  3. Step 3: Cross multiply
    678,937.84x = 936,949.86 × 373,033.31
  4. Step 4: Simplify right side
    678,937.84x = 349,513,502,895.09
  5. Step 5: Solve for x
    x = 349,513,502,895.09/678,937.84
  6. Step 6: Final answer
    x = 514,794.56

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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.