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Finding the Fourth Proportional to 539,559.72, 744,476.94 and 313,083.72

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Solution

The fourth proportional to 539,559.72, 744,476.94 and 313,083.72 is: 431,988.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,559.72 : 744,476.94 = 313,083.72 : x
  2. Step 2: Convert to fraction form
    539,559.72/744,476.94 = 313,083.72/x
  3. Step 3: Cross multiply
    539,559.72x = 744,476.94 × 313,083.72
  4. Step 4: Simplify right side
    539,559.72x = 233,083,609,829.42
  5. Step 5: Solve for x
    x = 233,083,609,829.42/539,559.72
  6. Step 6: Final answer
    x = 431,988.53

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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.