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Finding the Fourth Proportional to 539,643.34, 744,708.75 and 297,926.31

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Solution

The fourth proportional to 539,643.34, 744,708.75 and 297,926.31 is: 411,138.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,643.34 : 744,708.75 = 297,926.31 : x
  2. Step 2: Convert to fraction form
    539,643.34/744,708.75 = 297,926.31/x
  3. Step 3: Cross multiply
    539,643.34x = 744,708.75 × 297,926.31
  4. Step 4: Simplify right side
    539,643.34x = 221,868,329,912.21
  5. Step 5: Solve for x
    x = 221,868,329,912.21/539,643.34
  6. Step 6: Final answer
    x = 411,138.83

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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.