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Finding the Fourth Proportional to 536,587.31, 740,329.01 and 321,648.95

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Solution

The fourth proportional to 536,587.31, 740,329.01 and 321,648.95 is: 443,778.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,587.31 : 740,329.01 = 321,648.95 : x
  2. Step 2: Convert to fraction form
    536,587.31/740,329.01 = 321,648.95/x
  3. Step 3: Cross multiply
    536,587.31x = 740,329.01 × 321,648.95
  4. Step 4: Simplify right side
    536,587.31x = 238,126,048,721.04
  5. Step 5: Solve for x
    x = 238,126,048,721.04/536,587.31
  6. Step 6: Final answer
    x = 443,778.76

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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.