Home / 630,944.64-945,629.64-315,491.76

Finding the Fourth Proportional to 630,944.64, 945,629.64 and 315,491.76

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Solution

The fourth proportional to 630,944.64, 945,629.64 and 315,491.76 is: 472,843.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,944.64 : 945,629.64 = 315,491.76 : x
  2. Step 2: Convert to fraction form
    630,944.64/945,629.64 = 315,491.76/x
  3. Step 3: Cross multiply
    630,944.64x = 945,629.64 × 315,491.76
  4. Step 4: Simplify right side
    630,944.64x = 298,338,359,431.77
  5. Step 5: Solve for x
    x = 298,338,359,431.77/630,944.64
  6. Step 6: Final answer
    x = 472,843.96

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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.