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Finding the Fourth Proportional to 665,454.32, 997,755.90 and 395,510.46

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Solution

The fourth proportional to 665,454.32, 997,755.90 and 395,510.46 is: 593,012.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,454.32 : 997,755.90 = 395,510.46 : x
  2. Step 2: Convert to fraction form
    665,454.32/997,755.90 = 395,510.46/x
  3. Step 3: Cross multiply
    665,454.32x = 997,755.90 × 395,510.46
  4. Step 4: Simplify right side
    665,454.32x = 394,622,894,976.71
  5. Step 5: Solve for x
    x = 394,622,894,976.71/665,454.32
  6. Step 6: Final answer
    x = 593,012.75

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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.