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Finding the Fourth Proportional to 492,535.89, 679,279.16 and 339,817.68

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Solution

The fourth proportional to 492,535.89, 679,279.16 and 339,817.68 is: 468,658.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,535.89 : 679,279.16 = 339,817.68 : x
  2. Step 2: Convert to fraction form
    492,535.89/679,279.16 = 339,817.68/x
  3. Step 3: Cross multiply
    492,535.89x = 679,279.16 × 339,817.68
  4. Step 4: Simplify right side
    492,535.89x = 230,831,069,073.09
  5. Step 5: Solve for x
    x = 230,831,069,073.09/492,535.89
  6. Step 6: Final answer
    x = 468,658.37

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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.