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Finding the Fourth Proportional to 511,054.54, 700,147.21 and 491,900.37

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Solution

The fourth proportional to 511,054.54, 700,147.21 and 491,900.37 is: 673,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,054.54 : 700,147.21 = 491,900.37 : x
  2. Step 2: Convert to fraction form
    511,054.54/700,147.21 = 491,900.37/x
  3. Step 3: Cross multiply
    511,054.54x = 700,147.21 × 491,900.37
  4. Step 4: Simplify right side
    511,054.54x = 344,402,671,653.47
  5. Step 5: Solve for x
    x = 344,402,671,653.47/511,054.54
  6. Step 6: Final answer
    x = 673,905.90

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Double scale
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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.