Home / 667,789.02-921,572.37-381,303.90

Finding the Fourth Proportional to 667,789.02, 921,572.37 and 381,303.90

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Solution

The fourth proportional to 667,789.02, 921,572.37 and 381,303.90 is: 526,212.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,789.02 : 921,572.37 = 381,303.90 : x
  2. Step 2: Convert to fraction form
    667,789.02/921,572.37 = 381,303.90/x
  3. Step 3: Cross multiply
    667,789.02x = 921,572.37 × 381,303.90
  4. Step 4: Simplify right side
    667,789.02x = 351,399,138,813.24
  5. Step 5: Solve for x
    x = 351,399,138,813.24/667,789.02
  6. Step 6: Final answer
    x = 526,212.81

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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.