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Finding the Fourth Proportional to 508,454.46, 701,665.21 and 279,015.57

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Solution

The fourth proportional to 508,454.46, 701,665.21 and 279,015.57 is: 385,040.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,454.46 : 701,665.21 = 279,015.57 : x
  2. Step 2: Convert to fraction form
    508,454.46/701,665.21 = 279,015.57/x
  3. Step 3: Cross multiply
    508,454.46x = 701,665.21 × 279,015.57
  4. Step 4: Simplify right side
    508,454.46x = 195,775,518,517.32
  5. Step 5: Solve for x
    x = 195,775,518,517.32/508,454.46
  6. Step 6: Final answer
    x = 385,040.42

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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.