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Finding the Fourth Proportional to 631,758.39, 871,813.63 and 345,280.52

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Solution

The fourth proportional to 631,758.39, 871,813.63 and 345,280.52 is: 476,480.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,758.39 : 871,813.63 = 345,280.52 : x
  2. Step 2: Convert to fraction form
    631,758.39/871,813.63 = 345,280.52/x
  3. Step 3: Cross multiply
    631,758.39x = 871,813.63 × 345,280.52
  4. Step 4: Simplify right side
    631,758.39x = 301,020,266,120.62
  5. Step 5: Solve for x
    x = 301,020,266,120.62/631,758.39
  6. Step 6: Final answer
    x = 476,480.05

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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.