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Finding the Fourth Proportional to 535,370.68, 739,679.34 and 455,640.76

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Solution

The fourth proportional to 535,370.68, 739,679.34 and 455,640.76 is: 629,522.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,370.68 : 739,679.34 = 455,640.76 : x
  2. Step 2: Convert to fraction form
    535,370.68/739,679.34 = 455,640.76/x
  3. Step 3: Cross multiply
    535,370.68x = 739,679.34 × 455,640.76
  4. Step 4: Simplify right side
    535,370.68x = 337,028,056,633.90
  5. Step 5: Solve for x
    x = 337,028,056,633.90/535,370.68
  6. Step 6: Final answer
    x = 629,522.81

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1.5x scale

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.