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Finding the Fourth Proportional to 631,936.08, 872,073.72 and 377,281.80

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Solution

The fourth proportional to 631,936.08, 872,073.72 and 377,281.80 is: 520,650.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,936.08 : 872,073.72 = 377,281.80 : x
  2. Step 2: Convert to fraction form
    631,936.08/872,073.72 = 377,281.80/x
  3. Step 3: Cross multiply
    631,936.08x = 872,073.72 × 377,281.80
  4. Step 4: Simplify right side
    631,936.08x = 329,017,542,814.30
  5. Step 5: Solve for x
    x = 329,017,542,814.30/631,936.08
  6. Step 6: Final answer
    x = 520,650.04

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Double scale
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1.5x scale

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.