Home / 657,818.40-907,789.92-356,012.64

Finding the Fourth Proportional to 657,818.40, 907,789.92 and 356,012.64

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Solution

The fourth proportional to 657,818.40, 907,789.92 and 356,012.64 is: 491,297.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,818.40 : 907,789.92 = 356,012.64 : x
  2. Step 2: Convert to fraction form
    657,818.40/907,789.92 = 356,012.64/x
  3. Step 3: Cross multiply
    657,818.40x = 907,789.92 × 356,012.64
  4. Step 4: Simplify right side
    657,818.40x = 323,184,685,984.59
  5. Step 5: Solve for x
    x = 323,184,685,984.59/657,818.40
  6. Step 6: Final answer
    x = 491,297.73

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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.