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Finding the Fourth Proportional to 539,231.92, 744,205.95 and 309,788.77

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Solution

The fourth proportional to 539,231.92, 744,205.95 and 309,788.77 is: 427,546.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,231.92 : 744,205.95 = 309,788.77 : x
  2. Step 2: Convert to fraction form
    539,231.92/744,205.95 = 309,788.77/x
  3. Step 3: Cross multiply
    539,231.92x = 744,205.95 × 309,788.77
  4. Step 4: Simplify right side
    539,231.92x = 230,546,646,420.20
  5. Step 5: Solve for x
    x = 230,546,646,420.20/539,231.92
  6. Step 6: Final answer
    x = 427,546.36

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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.