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Finding the Fourth Proportional to 678,397.94, 936,152.60 and 376,572.50

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Solution

The fourth proportional to 678,397.94, 936,152.60 and 376,572.50 is: 519,649.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,397.94 : 936,152.60 = 376,572.50 : x
  2. Step 2: Convert to fraction form
    678,397.94/936,152.60 = 376,572.50/x
  3. Step 3: Cross multiply
    678,397.94x = 936,152.60 × 376,572.50
  4. Step 4: Simplify right side
    678,397.94x = 352,529,324,963.50
  5. Step 5: Solve for x
    x = 352,529,324,963.50/678,397.94
  6. Step 6: Final answer
    x = 519,649.76

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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.