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Finding the Fourth Proportional to 611,487.95, 843,815.72 and 339,539.27

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Solution

The fourth proportional to 611,487.95, 843,815.72 and 339,539.27 is: 468,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,487.95 : 843,815.72 = 339,539.27 : x
  2. Step 2: Convert to fraction form
    611,487.95/843,815.72 = 339,539.27/x
  3. Step 3: Cross multiply
    611,487.95x = 843,815.72 × 339,539.27
  4. Step 4: Simplify right side
    611,487.95x = 286,508,570,213.09
  5. Step 5: Solve for x
    x = 286,508,570,213.09/611,487.95
  6. Step 6: Final answer
    x = 468,543.28

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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.