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Finding the Fourth Proportional to 665,053.80, 997,710.30 and 265,626.60

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Solution

The fourth proportional to 665,053.80, 997,710.30 and 265,626.60 is: 398,491.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,053.80 : 997,710.30 = 265,626.60 : x
  2. Step 2: Convert to fraction form
    665,053.80/997,710.30 = 265,626.60/x
  3. Step 3: Cross multiply
    665,053.80x = 997,710.30 × 265,626.60
  4. Step 4: Simplify right side
    665,053.80x = 265,018,394,773.98
  5. Step 5: Solve for x
    x = 265,018,394,773.98/665,053.80
  6. Step 6: Final answer
    x = 398,491.66

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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.