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Finding the Fourth Proportional to 515,067.70, 772,601.55 and 486,037.30

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Solution

The fourth proportional to 515,067.70, 772,601.55 and 486,037.30 is: 729,055.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,067.70 : 772,601.55 = 486,037.30 : x
  2. Step 2: Convert to fraction form
    515,067.70/772,601.55 = 486,037.30/x
  3. Step 3: Cross multiply
    515,067.70x = 772,601.55 × 486,037.30
  4. Step 4: Simplify right side
    515,067.70x = 375,513,171,337.82
  5. Step 5: Solve for x
    x = 375,513,171,337.82/515,067.70
  6. Step 6: Final answer
    x = 729,055.95

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Double scale
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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.