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Finding the Fourth Proportional to 549,642.78, 758,334.87 and 307,892.70

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Solution

The fourth proportional to 549,642.78, 758,334.87 and 307,892.70 is: 424,795.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,642.78 : 758,334.87 = 307,892.70 : x
  2. Step 2: Convert to fraction form
    549,642.78/758,334.87 = 307,892.70/x
  3. Step 3: Cross multiply
    549,642.78x = 758,334.87 × 307,892.70
  4. Step 4: Simplify right side
    549,642.78x = 233,485,770,628.45
  5. Step 5: Solve for x
    x = 233,485,770,628.45/549,642.78
  6. Step 6: Final answer
    x = 424,795.48

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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.