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Finding the Fourth Proportional to 479,102.80, 660,741.96 and 383,574.64

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Solution

The fourth proportional to 479,102.80, 660,741.96 and 383,574.64 is: 528,996.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,102.80 : 660,741.96 = 383,574.64 : x
  2. Step 2: Convert to fraction form
    479,102.80/660,741.96 = 383,574.64/x
  3. Step 3: Cross multiply
    479,102.80x = 660,741.96 × 383,574.64
  4. Step 4: Simplify right side
    479,102.80x = 253,443,859,439.89
  5. Step 5: Solve for x
    x = 253,443,859,439.89/479,102.80
  6. Step 6: Final answer
    x = 528,996.82

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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.