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Finding the Fourth Proportional to 479,635.32, 661,804.73 and 288,661.02

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Solution

The fourth proportional to 479,635.32, 661,804.73 and 288,661.02 is: 398,296.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,635.32 : 661,804.73 = 288,661.02 : x
  2. Step 2: Convert to fraction form
    479,635.32/661,804.73 = 288,661.02/x
  3. Step 3: Cross multiply
    479,635.32x = 661,804.73 × 288,661.02
  4. Step 4: Simplify right side
    479,635.32x = 191,037,225,560.03
  5. Step 5: Solve for x
    x = 191,037,225,560.03/479,635.32
  6. Step 6: Final answer
    x = 398,296.82

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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.