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Finding the Fourth Proportional to 404,629.60, 606,944.40 and 278,658.40

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Solution

The fourth proportional to 404,629.60, 606,944.40 and 278,658.40 is: 417,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,629.60 : 606,944.40 = 278,658.40 : x
  2. Step 2: Convert to fraction form
    404,629.60/606,944.40 = 278,658.40/x
  3. Step 3: Cross multiply
    404,629.60x = 606,944.40 × 278,658.40
  4. Step 4: Simplify right side
    404,629.60x = 169,130,155,392.96
  5. Step 5: Solve for x
    x = 169,130,155,392.96/404,629.60
  6. Step 6: Final answer
    x = 417,987.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.