Home / 557,747.71-769,629.25-315,978.50

Finding the Fourth Proportional to 557,747.71, 769,629.25 and 315,978.50

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Solution

The fourth proportional to 557,747.71, 769,629.25 and 315,978.50 is: 436,014.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,747.71 : 769,629.25 = 315,978.50 : x
  2. Step 2: Convert to fraction form
    557,747.71/769,629.25 = 315,978.50/x
  3. Step 3: Cross multiply
    557,747.71x = 769,629.25 × 315,978.50
  4. Step 4: Simplify right side
    557,747.71x = 243,186,296,512.79
  5. Step 5: Solve for x
    x = 243,186,296,512.79/557,747.71
  6. Step 6: Final answer
    x = 436,014.87

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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.