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Finding the Fourth Proportional to 610,756.80, 842,845.37 and 338,824.70

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Solution

The fourth proportional to 610,756.80, 842,845.37 and 338,824.70 is: 467,578.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,756.80 : 842,845.37 = 338,824.70 : x
  2. Step 2: Convert to fraction form
    610,756.80/842,845.37 = 338,824.70/x
  3. Step 3: Cross multiply
    610,756.80x = 842,845.37 × 338,824.70
  4. Step 4: Simplify right side
    610,756.80x = 285,576,829,636.64
  5. Step 5: Solve for x
    x = 285,576,829,636.64/610,756.80
  6. Step 6: Final answer
    x = 467,578.63

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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.