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Finding the Fourth Proportional to 605,817.60, 906,976.80 and 369,621.60

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Solution

The fourth proportional to 605,817.60, 906,976.80 and 369,621.60 is: 553,364.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,817.60 : 906,976.80 = 369,621.60 : x
  2. Step 2: Convert to fraction form
    605,817.60/906,976.80 = 369,621.60/x
  3. Step 3: Cross multiply
    605,817.60x = 906,976.80 × 369,621.60
  4. Step 4: Simplify right side
    605,817.60x = 335,238,215,978.88
  5. Step 5: Solve for x
    x = 335,238,215,978.88/605,817.60
  6. Step 6: Final answer
    x = 553,364.93

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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.