Home / 689,279.18-951,064.47-402,743.88

Finding the Fourth Proportional to 689,279.18, 951,064.47 and 402,743.88

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Solution

The fourth proportional to 689,279.18, 951,064.47 and 402,743.88 is: 555,704.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,279.18 : 951,064.47 = 402,743.88 : x
  2. Step 2: Convert to fraction form
    689,279.18/951,064.47 = 402,743.88/x
  3. Step 3: Cross multiply
    689,279.18x = 951,064.47 × 402,743.88
  4. Step 4: Simplify right side
    689,279.18x = 383,035,394,777.94
  5. Step 5: Solve for x
    x = 383,035,394,777.94/689,279.18
  6. Step 6: Final answer
    x = 555,704.29

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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.