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Finding the Fourth Proportional to 632,280.47, 871,522.94 and 494,218.80

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Solution

The fourth proportional to 632,280.47, 871,522.94 and 494,218.80 is: 681,221.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,280.47 : 871,522.94 = 494,218.80 : x
  2. Step 2: Convert to fraction form
    632,280.47/871,522.94 = 494,218.80/x
  3. Step 3: Cross multiply
    632,280.47x = 871,522.94 × 494,218.80
  4. Step 4: Simplify right side
    632,280.47x = 430,723,022,814.82
  5. Step 5: Solve for x
    x = 430,723,022,814.82/632,280.47
  6. Step 6: Final answer
    x = 681,221.46

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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.