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Finding the Fourth Proportional to 488,036.33, 728,732.36 and 430,631.82

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Solution

The fourth proportional to 488,036.33, 728,732.36 and 430,631.82 is: 643,016.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,036.33 : 728,732.36 = 430,631.82 : x
  2. Step 2: Convert to fraction form
    488,036.33/728,732.36 = 430,631.82/x
  3. Step 3: Cross multiply
    488,036.33x = 728,732.36 × 430,631.82
  4. Step 4: Simplify right side
    488,036.33x = 313,815,340,326.54
  5. Step 5: Solve for x
    x = 313,815,340,326.54/488,036.33
  6. Step 6: Final answer
    x = 643,016.36

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Similar ratio
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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.