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Finding the Fourth Proportional to 630,709.60, 946,064.40 and 187,477.60

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Solution

The fourth proportional to 630,709.60, 946,064.40 and 187,477.60 is: 281,216.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,709.60 : 946,064.40 = 187,477.60 : x
  2. Step 2: Convert to fraction form
    630,709.60/946,064.40 = 187,477.60/x
  3. Step 3: Cross multiply
    630,709.60x = 946,064.40 × 187,477.60
  4. Step 4: Simplify right side
    630,709.60x = 177,365,883,157.44
  5. Step 5: Solve for x
    x = 177,365,883,157.44/630,709.60
  6. Step 6: Final answer
    x = 281,216.40

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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.