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Finding the Fourth Proportional to 667,026.46, 920,502.40 and 395,109.82

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Solution

The fourth proportional to 667,026.46, 920,502.40 and 395,109.82 is: 545,255.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,026.46 : 920,502.40 = 395,109.82 : x
  2. Step 2: Convert to fraction form
    667,026.46/920,502.40 = 395,109.82/x
  3. Step 3: Cross multiply
    667,026.46x = 920,502.40 × 395,109.82
  4. Step 4: Simplify right side
    667,026.46x = 363,699,537,573.57
  5. Step 5: Solve for x
    x = 363,699,537,573.57/667,026.46
  6. Step 6: Final answer
    x = 545,255.04

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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.