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Finding the Fourth Proportional to 468,679.37, 646,841.90 and 287,359.25

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Solution

The fourth proportional to 468,679.37, 646,841.90 and 287,359.25 is: 396,595.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,679.37 : 646,841.90 = 287,359.25 : x
  2. Step 2: Convert to fraction form
    468,679.37/646,841.90 = 287,359.25/x
  3. Step 3: Cross multiply
    468,679.37x = 646,841.90 × 287,359.25
  4. Step 4: Simplify right side
    468,679.37x = 185,876,000,736.76
  5. Step 5: Solve for x
    x = 185,876,000,736.76/468,679.37
  6. Step 6: Final answer
    x = 396,595.23

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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.