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Finding the Fourth Proportional to 654,696.54, 903,410.78 and 368,155.80

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Solution

The fourth proportional to 654,696.54, 903,410.78 and 368,155.80 is: 508,015.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,696.54 : 903,410.78 = 368,155.80 : x
  2. Step 2: Convert to fraction form
    654,696.54/903,410.78 = 368,155.80/x
  3. Step 3: Cross multiply
    654,696.54x = 903,410.78 × 368,155.80
  4. Step 4: Simplify right side
    654,696.54x = 332,595,918,439.52
  5. Step 5: Solve for x
    x = 332,595,918,439.52/654,696.54
  6. Step 6: Final answer
    x = 508,015.39

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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.