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Finding the Fourth Proportional to 480,287.10, 662,778.27 and 276,369.51

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Solution

The fourth proportional to 480,287.10, 662,778.27 and 276,369.51 is: 381,379.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,287.10 : 662,778.27 = 276,369.51 : x
  2. Step 2: Convert to fraction form
    480,287.10/662,778.27 = 276,369.51/x
  3. Step 3: Cross multiply
    480,287.10x = 662,778.27 × 276,369.51
  4. Step 4: Simplify right side
    480,287.10x = 183,171,705,718.55
  5. Step 5: Solve for x
    x = 183,171,705,718.55/480,287.10
  6. Step 6: Final answer
    x = 381,379.61

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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.