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Finding the Fourth Proportional to 689,279.55, 951,064.99 and 402,744.26

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Solution

The fourth proportional to 689,279.55, 951,064.99 and 402,744.26 is: 555,704.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,279.55 : 951,064.99 = 402,744.26 : x
  2. Step 2: Convert to fraction form
    689,279.55/951,064.99 = 402,744.26/x
  3. Step 3: Cross multiply
    689,279.55x = 951,064.99 × 402,744.26
  4. Step 4: Simplify right side
    689,279.55x = 383,035,959,847.27
  5. Step 5: Solve for x
    x = 383,035,959,847.27/689,279.55
  6. Step 6: Final answer
    x = 555,704.81

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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.