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Finding the Fourth Proportional to 539,410.32, 744,361.02 and 309,806.10

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Solution

The fourth proportional to 539,410.32, 744,361.02 and 309,806.10 is: 427,517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,410.32 : 744,361.02 = 309,806.10 : x
  2. Step 2: Convert to fraction form
    539,410.32/744,361.02 = 309,806.10/x
  3. Step 3: Cross multiply
    539,410.32x = 744,361.02 × 309,806.10
  4. Step 4: Simplify right side
    539,410.32x = 230,607,584,598.22
  5. Step 5: Solve for x
    x = 230,607,584,598.22/539,410.32
  6. Step 6: Final answer
    x = 427,517.93

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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.