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Finding the Fourth Proportional to 631,711.12, 948,222.96 and 365,990.80

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Solution

The fourth proportional to 631,711.12, 948,222.96 and 365,990.80 is: 549,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,711.12 : 948,222.96 = 365,990.80 : x
  2. Step 2: Convert to fraction form
    631,711.12/948,222.96 = 365,990.80/x
  3. Step 3: Cross multiply
    631,711.12x = 948,222.96 × 365,990.80
  4. Step 4: Simplify right side
    631,711.12x = 347,040,879,708.77
  5. Step 5: Solve for x
    x = 347,040,879,708.77/631,711.12
  6. Step 6: Final answer
    x = 549,366.43

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1.5x scale

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.