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Finding the Fourth Proportional to 492,536.89, 679,280.54 and 339,818.68

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Solution

The fourth proportional to 492,536.89, 679,280.54 and 339,818.68 is: 468,659.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,536.89 : 679,280.54 = 339,818.68 : x
  2. Step 2: Convert to fraction form
    492,536.89/679,280.54 = 339,818.68/x
  3. Step 3: Cross multiply
    492,536.89x = 679,280.54 × 339,818.68
  4. Step 4: Simplify right side
    492,536.89x = 230,832,216,452.49
  5. Step 5: Solve for x
    x = 230,832,216,452.49/492,536.89
  6. Step 6: Final answer
    x = 468,659.75

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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.