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Finding the Fourth Proportional to 404,679.60, 607,710.60 and 265,057.20

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Solution

The fourth proportional to 404,679.60, 607,710.60 and 265,057.20 is: 398,038.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,679.60 : 607,710.60 = 265,057.20 : x
  2. Step 2: Convert to fraction form
    404,679.60/607,710.60 = 265,057.20/x
  3. Step 3: Cross multiply
    404,679.60x = 607,710.60 × 265,057.20
  4. Step 4: Simplify right side
    404,679.60x = 161,078,070,046.32
  5. Step 5: Solve for x
    x = 161,078,070,046.32/404,679.60
  6. Step 6: Final answer
    x = 398,038.52

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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.