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Finding the Fourth Proportional to 404,659.60, 607,680.60 and 265,037.20

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Solution

The fourth proportional to 404,659.60, 607,680.60 and 265,037.20 is: 398,008.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,659.60 : 607,680.60 = 265,037.20 : x
  2. Step 2: Convert to fraction form
    404,659.60/607,680.60 = 265,037.20/x
  3. Step 3: Cross multiply
    404,659.60x = 607,680.60 × 265,037.20
  4. Step 4: Simplify right side
    404,659.60x = 161,057,964,718.32
  5. Step 5: Solve for x
    x = 161,057,964,718.32/404,659.60
  6. Step 6: Final answer
    x = 398,008.51

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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.