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Finding the Fourth Proportional to 678,425.82, 936,245.45 and 372,521.92

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Solution

The fourth proportional to 678,425.82, 936,245.45 and 372,521.92 is: 514,090.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,425.82 : 936,245.45 = 372,521.92 : x
  2. Step 2: Convert to fraction form
    678,425.82/936,245.45 = 372,521.92/x
  3. Step 3: Cross multiply
    678,425.82x = 936,245.45 × 372,521.92
  4. Step 4: Simplify right side
    678,425.82x = 348,771,952,625.26
  5. Step 5: Solve for x
    x = 348,771,952,625.26/678,425.82
  6. Step 6: Final answer
    x = 514,090.03

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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.