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Finding the Fourth Proportional to 456,626.40, 630,321.08 and 408,796.71

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Solution

The fourth proportional to 456,626.40, 630,321.08 and 408,796.71 is: 564,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,626.40 : 630,321.08 = 408,796.71 : x
  2. Step 2: Convert to fraction form
    456,626.40/630,321.08 = 408,796.71/x
  3. Step 3: Cross multiply
    456,626.40x = 630,321.08 × 408,796.71
  4. Step 4: Simplify right side
    456,626.40x = 257,673,183,747.65
  5. Step 5: Solve for x
    x = 257,673,183,747.65/456,626.40
  6. Step 6: Final answer
    x = 564,297.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.