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Finding the Fourth Proportional to 694,128, 957,897.28 and 376,176

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Solution

The fourth proportional to 694,128, 957,897.28 and 376,176 is: 519,123.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,128 : 957,897.28 = 376,176 : x
  2. Step 2: Convert to fraction form
    694,128/957,897.28 = 376,176/x
  3. Step 3: Cross multiply
    694,128x = 957,897.28 × 376,176
  4. Step 4: Simplify right side
    694,128x = 360,337,967,201.28
  5. Step 5: Solve for x
    x = 360,337,967,201.28/694,128
  6. Step 6: Final answer
    x = 519,123.23

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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.