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Finding the Fourth Proportional to 487,123.60, 729,648.60 and 404,179.60

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Solution

The fourth proportional to 487,123.60, 729,648.60 and 404,179.60 is: 605,409.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,123.60 : 729,648.60 = 404,179.60 : x
  2. Step 2: Convert to fraction form
    487,123.60/729,648.60 = 404,179.60/x
  3. Step 3: Cross multiply
    487,123.60x = 729,648.60 × 404,179.60
  4. Step 4: Simplify right side
    487,123.60x = 294,909,079,288.56
  5. Step 5: Solve for x
    x = 294,909,079,288.56/487,123.60
  6. Step 6: Final answer
    x = 605,409.14

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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.