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Finding the Fourth Proportional to 536,585.79, 740,326.92 and 321,647.43

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Solution

The fourth proportional to 536,585.79, 740,326.92 and 321,647.43 is: 443,776.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,585.79 : 740,326.92 = 321,647.43 : x
  2. Step 2: Convert to fraction form
    536,585.79/740,326.92 = 321,647.43/x
  3. Step 3: Cross multiply
    536,585.79x = 740,326.92 × 321,647.43
  4. Step 4: Simplify right side
    536,585.79x = 238,124,252,747.86
  5. Step 5: Solve for x
    x = 238,124,252,747.86/536,585.79
  6. Step 6: Final answer
    x = 443,776.66

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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.