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Finding the Fourth Proportional to 539,643.87, 744,709.55 and 297,926.37

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Solution

The fourth proportional to 539,643.87, 744,709.55 and 297,926.37 is: 411,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,643.87 : 744,709.55 = 297,926.37 : x
  2. Step 2: Convert to fraction form
    539,643.87/744,709.55 = 297,926.37/x
  3. Step 3: Cross multiply
    539,643.87x = 744,709.55 × 297,926.37
  4. Step 4: Simplify right side
    539,643.87x = 221,868,611,446.20
  5. Step 5: Solve for x
    x = 221,868,611,446.20/539,643.87
  6. Step 6: Final answer
    x = 411,138.95

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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.