Home / 678,085.48-935,769.84-372,190.48

Finding the Fourth Proportional to 678,085.48, 935,769.84 and 372,190.48

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Solution

The fourth proportional to 678,085.48, 935,769.84 and 372,190.48 is: 513,629.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,085.48 : 935,769.84 = 372,190.48 : x
  2. Step 2: Convert to fraction form
    678,085.48/935,769.84 = 372,190.48/x
  3. Step 3: Cross multiply
    678,085.48x = 935,769.84 × 372,190.48
  4. Step 4: Simplify right side
    678,085.48x = 348,284,625,919.12
  5. Step 5: Solve for x
    x = 348,284,625,919.12/678,085.48
  6. Step 6: Final answer
    x = 513,629.38

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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.