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Finding the Fourth Proportional to 678,091.48, 935,778.12 and 372,196.48

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Solution

The fourth proportional to 678,091.48, 935,778.12 and 372,196.48 is: 513,637.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,091.48 : 935,778.12 = 372,196.48 : x
  2. Step 2: Convert to fraction form
    678,091.48/935,778.12 = 372,196.48/x
  3. Step 3: Cross multiply
    678,091.48x = 935,778.12 × 372,196.48
  4. Step 4: Simplify right side
    678,091.48x = 348,293,322,325.02
  5. Step 5: Solve for x
    x = 348,293,322,325.02/678,091.48
  6. Step 6: Final answer
    x = 513,637.66

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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.