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Finding the Fourth Proportional to 680,001.92, 938,403.84 and 378,196.48

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Solution

The fourth proportional to 680,001.92, 938,403.84 and 378,196.48 is: 521,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,001.92 : 938,403.84 = 378,196.48 : x
  2. Step 2: Convert to fraction form
    680,001.92/938,403.84 = 378,196.48/x
  3. Step 3: Cross multiply
    680,001.92x = 938,403.84 × 378,196.48
  4. Step 4: Simplify right side
    680,001.92x = 354,901,029,106.48
  5. Step 5: Solve for x
    x = 354,901,029,106.48/680,001.92
  6. Step 6: Final answer
    x = 521,911.80

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1.5x scale

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.