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Finding the Fourth Proportional to 673,911.18, 929,992.86 and 372,105.18

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Solution

The fourth proportional to 673,911.18, 929,992.86 and 372,105.18 is: 513,502.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,911.18 : 929,992.86 = 372,105.18 : x
  2. Step 2: Convert to fraction form
    673,911.18/929,992.86 = 372,105.18/x
  3. Step 3: Cross multiply
    673,911.18x = 929,992.86 × 372,105.18
  4. Step 4: Simplify right side
    673,911.18x = 346,055,160,569.02
  5. Step 5: Solve for x
    x = 346,055,160,569.02/673,911.18
  6. Step 6: Final answer
    x = 513,502.63

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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.