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Finding the Fourth Proportional to 611,506.25, 843,906.71 and 339,575.20

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Solution

The fourth proportional to 611,506.25, 843,906.71 and 339,575.20 is: 468,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,506.25 : 843,906.71 = 339,575.20 : x
  2. Step 2: Convert to fraction form
    611,506.25/843,906.71 = 339,575.20/x
  3. Step 3: Cross multiply
    611,506.25x = 843,906.71 × 339,575.20
  4. Step 4: Simplify right side
    611,506.25x = 286,569,789,829.59
  5. Step 5: Solve for x
    x = 286,569,789,829.59/611,506.25
  6. Step 6: Final answer
    x = 468,629.37

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1.5x scale

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.