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Finding the Fourth Proportional to 631,690.65, 946,640.12 and 488,871.05

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Solution

The fourth proportional to 631,690.65, 946,640.12 and 488,871.05 is: 732,613.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,690.65 : 946,640.12 = 488,871.05 : x
  2. Step 2: Convert to fraction form
    631,690.65/946,640.12 = 488,871.05/x
  3. Step 3: Cross multiply
    631,690.65x = 946,640.12 × 488,871.05
  4. Step 4: Simplify right side
    631,690.65x = 462,784,942,258.97
  5. Step 5: Solve for x
    x = 462,784,942,258.97/631,690.65
  6. Step 6: Final answer
    x = 732,613.25

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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.