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Finding the Fourth Proportional to 539,741.11, 744,908.34 and 313,386.61

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Solution

The fourth proportional to 539,741.11, 744,908.34 and 313,386.61 is: 432,511.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,741.11 : 744,908.34 = 313,386.61 : x
  2. Step 2: Convert to fraction form
    539,741.11/744,908.34 = 313,386.61/x
  3. Step 3: Cross multiply
    539,741.11x = 744,908.34 × 313,386.61
  4. Step 4: Simplify right side
    539,741.11x = 233,444,300,142.96
  5. Step 5: Solve for x
    x = 233,444,300,142.96/539,741.11
  6. Step 6: Final answer
    x = 432,511.62

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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.