Home / 626,845.28-865,037.56-354,906.12

Finding the Fourth Proportional to 626,845.28, 865,037.56 and 354,906.12

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Solution

The fourth proportional to 626,845.28, 865,037.56 and 354,906.12 is: 489,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,845.28 : 865,037.56 = 354,906.12 : x
  2. Step 2: Convert to fraction form
    626,845.28/865,037.56 = 354,906.12/x
  3. Step 3: Cross multiply
    626,845.28x = 865,037.56 × 354,906.12
  4. Step 4: Simplify right side
    626,845.28x = 307,007,124,073.87
  5. Step 5: Solve for x
    x = 307,007,124,073.87/626,845.28
  6. Step 6: Final answer
    x = 489,765.39

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Double scale
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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.