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Finding the Fourth Proportional to 605,011.86, 907,708.41 and 285,150.78

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Solution

The fourth proportional to 605,011.86, 907,708.41 and 285,150.78 is: 427,816.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,011.86 : 907,708.41 = 285,150.78 : x
  2. Step 2: Convert to fraction form
    605,011.86/907,708.41 = 285,150.78/x
  3. Step 3: Cross multiply
    605,011.86x = 907,708.41 × 285,150.78
  4. Step 4: Simplify right side
    605,011.86x = 258,833,761,124.06
  5. Step 5: Solve for x
    x = 258,833,761,124.06/605,011.86
  6. Step 6: Final answer
    x = 427,816.01

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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.