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Finding the Fourth Proportional to 611,568.36, 843,992.40 and 339,637.50

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Solution

The fourth proportional to 611,568.36, 843,992.40 and 339,637.50 is: 468,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,568.36 : 843,992.40 = 339,637.50 : x
  2. Step 2: Convert to fraction form
    611,568.36/843,992.40 = 339,637.50/x
  3. Step 3: Cross multiply
    611,568.36x = 843,992.40 × 339,637.50
  4. Step 4: Simplify right side
    611,568.36x = 286,651,468,755
  5. Step 5: Solve for x
    x = 286,651,468,755/611,568.36
  6. Step 6: Final answer
    x = 468,715.34

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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.