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Finding the Fourth Proportional to 511,054.28, 700,146.86 and 491,900.09

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Solution

The fourth proportional to 511,054.28, 700,146.86 and 491,900.09 is: 673,905.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,054.28 : 700,146.86 = 491,900.09 : x
  2. Step 2: Convert to fraction form
    511,054.28/700,146.86 = 491,900.09/x
  3. Step 3: Cross multiply
    511,054.28x = 700,146.86 × 491,900.09
  4. Step 4: Simplify right side
    511,054.28x = 344,402,306,427.34
  5. Step 5: Solve for x
    x = 344,402,306,427.34/511,054.28
  6. Step 6: Final answer
    x = 673,905.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.