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Finding the Fourth Proportional to 665,452.32, 997,752.91 and 395,508.45

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Solution

The fourth proportional to 665,452.32, 997,752.91 and 395,508.45 is: 593,009.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,452.32 : 997,752.91 = 395,508.45 : x
  2. Step 2: Convert to fraction form
    665,452.32/997,752.91 = 395,508.45/x
  3. Step 3: Cross multiply
    665,452.32x = 997,752.91 × 395,508.45
  4. Step 4: Simplify right side
    665,452.32x = 394,619,706,917.09
  5. Step 5: Solve for x
    x = 394,619,706,917.09/665,452.32
  6. Step 6: Final answer
    x = 593,009.74

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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.