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Finding the Fourth Proportional to 511,827.40, 762,488.15 and 488,798.38

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Solution

The fourth proportional to 511,827.40, 762,488.15 and 488,798.38 is: 728,180.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,827.40 : 762,488.15 = 488,798.38 : x
  2. Step 2: Convert to fraction form
    511,827.40/762,488.15 = 488,798.38/x
  3. Step 3: Cross multiply
    511,827.40x = 762,488.15 × 488,798.38
  4. Step 4: Simplify right side
    511,827.40x = 372,702,972,489.20
  5. Step 5: Solve for x
    x = 372,702,972,489.20/511,827.40
  6. Step 6: Final answer
    x = 728,180.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.