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Finding the Fourth Proportional to 667,025.46, 920,501.01 and 395,108.82

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Solution

The fourth proportional to 667,025.46, 920,501.01 and 395,108.82 is: 545,253.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,025.46 : 920,501.01 = 395,108.82 : x
  2. Step 2: Convert to fraction form
    667,025.46/920,501.01 = 395,108.82/x
  3. Step 3: Cross multiply
    667,025.46x = 920,501.01 × 395,108.82
  4. Step 4: Simplify right side
    667,025.46x = 363,698,067,869.91
  5. Step 5: Solve for x
    x = 363,698,067,869.91/667,025.46
  6. Step 6: Final answer
    x = 545,253.65

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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.