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Finding the Fourth Proportional to 487,618.31, 672,619.02 and 322,047.29

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Solution

The fourth proportional to 487,618.31, 672,619.02 and 322,047.29 is: 444,230.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,618.31 : 672,619.02 = 322,047.29 : x
  2. Step 2: Convert to fraction form
    487,618.31/672,619.02 = 322,047.29/x
  3. Step 3: Cross multiply
    487,618.31x = 672,619.02 × 322,047.29
  4. Step 4: Simplify right side
    487,618.31x = 216,615,129,230.36
  5. Step 5: Solve for x
    x = 216,615,129,230.36/487,618.31
  6. Step 6: Final answer
    x = 444,230.92

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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.