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Finding the Fourth Proportional to 469,994.13, 648,760.39 and 279,007.67

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Solution

The fourth proportional to 469,994.13, 648,760.39 and 279,007.67 is: 385,130.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,994.13 : 648,760.39 = 279,007.67 : x
  2. Step 2: Convert to fraction form
    469,994.13/648,760.39 = 279,007.67/x
  3. Step 3: Cross multiply
    469,994.13x = 648,760.39 × 279,007.67
  4. Step 4: Simplify right side
    469,994.13x = 181,009,125,726.57
  5. Step 5: Solve for x
    x = 181,009,125,726.57/469,994.13
  6. Step 6: Final answer
    x = 385,130.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.