Home / 690,176.72-952,197.35-399,629.72

Finding the Fourth Proportional to 690,176.72, 952,197.35 and 399,629.72

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Solution

The fourth proportional to 690,176.72, 952,197.35 and 399,629.72 is: 551,346.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,176.72 : 952,197.35 = 399,629.72 : x
  2. Step 2: Convert to fraction form
    690,176.72/952,197.35 = 399,629.72/x
  3. Step 3: Cross multiply
    690,176.72x = 952,197.35 × 399,629.72
  4. Step 4: Simplify right side
    690,176.72x = 380,526,360,747.59
  5. Step 5: Solve for x
    x = 380,526,360,747.59/690,176.72
  6. Step 6: Final answer
    x = 551,346.27

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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.