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Finding the Fourth Proportional to 539,567.72, 744,487.94 and 313,091.72

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Solution

The fourth proportional to 539,567.72, 744,487.94 and 313,091.72 is: 431,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,567.72 : 744,487.94 = 313,091.72 : x
  2. Step 2: Convert to fraction form
    539,567.72/744,487.94 = 313,091.72/x
  3. Step 3: Cross multiply
    539,567.72x = 744,487.94 × 313,091.72
  4. Step 4: Simplify right side
    539,567.72x = 233,093,009,653.86
  5. Step 5: Solve for x
    x = 233,093,009,653.86/539,567.72
  6. Step 6: Final answer
    x = 431,999.55

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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.