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Finding the Fourth Proportional to 480,278.45, 662,766.35 and 276,360.90

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Solution

The fourth proportional to 480,278.45, 662,766.35 and 276,360.90 is: 381,367.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,278.45 : 662,766.35 = 276,360.90 : x
  2. Step 2: Convert to fraction form
    480,278.45/662,766.35 = 276,360.90/x
  3. Step 3: Cross multiply
    480,278.45x = 662,766.35 × 276,360.90
  4. Step 4: Simplify right side
    480,278.45x = 183,162,704,975.72
  5. Step 5: Solve for x
    x = 183,162,704,975.72/480,278.45
  6. Step 6: Final answer
    x = 381,367.74

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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.