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Finding the Fourth Proportional to 630,687.40, 946,031.10 and 187,455.40

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Solution

The fourth proportional to 630,687.40, 946,031.10 and 187,455.40 is: 281,183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,687.40 : 946,031.10 = 187,455.40 : x
  2. Step 2: Convert to fraction form
    630,687.40/946,031.10 = 187,455.40/x
  3. Step 3: Cross multiply
    630,687.40x = 946,031.10 × 187,455.40
  4. Step 4: Simplify right side
    630,687.40x = 177,338,638,262.94
  5. Step 5: Solve for x
    x = 177,338,638,262.94/630,687.40
  6. Step 6: Final answer
    x = 281,183.10

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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.