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Finding the Fourth Proportional to 665,451.32, 997,751.41 and 395,507.45

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Solution

The fourth proportional to 665,451.32, 997,751.41 and 395,507.45 is: 593,008.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,451.32 : 997,751.41 = 395,507.45 : x
  2. Step 2: Convert to fraction form
    665,451.32/997,751.41 = 395,507.45/x
  3. Step 3: Cross multiply
    665,451.32x = 997,751.41 × 395,507.45
  4. Step 4: Simplify right side
    665,451.32x = 394,618,112,339.80
  5. Step 5: Solve for x
    x = 394,618,112,339.80/665,451.32
  6. Step 6: Final answer
    x = 593,008.23

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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.