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Finding the Fourth Proportional to 673,920.96, 929,986.56 and 372,108.48

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Solution

The fourth proportional to 673,920.96, 929,986.56 and 372,108.48 is: 513,496.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,920.96 : 929,986.56 = 372,108.48 : x
  2. Step 2: Convert to fraction form
    673,920.96/929,986.56 = 372,108.48/x
  3. Step 3: Cross multiply
    673,920.96x = 929,986.56 × 372,108.48
  4. Step 4: Simplify right side
    673,920.96x = 346,055,885,262.03
  5. Step 5: Solve for x
    x = 346,055,885,262.03/673,920.96
  6. Step 6: Final answer
    x = 513,496.25

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Double scale
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1.5x scale

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.