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Finding the Fourth Proportional to 480,380.32, 662,762.64 and 279,010.72

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Solution

The fourth proportional to 480,380.32, 662,762.64 and 279,010.72 is: 384,940.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,380.32 : 662,762.64 = 279,010.72 : x
  2. Step 2: Convert to fraction form
    480,380.32/662,762.64 = 279,010.72/x
  3. Step 3: Cross multiply
    480,380.32x = 662,762.64 × 279,010.72
  4. Step 4: Simplify right side
    480,380.32x = 184,917,881,375.50
  5. Step 5: Solve for x
    x = 184,917,881,375.50/480,380.32
  6. Step 6: Final answer
    x = 384,940.58

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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.