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Finding the Fourth Proportional to 678,982.48, 937,011.56 and 373,078

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Solution

The fourth proportional to 678,982.48, 937,011.56 and 373,078 is: 514,856.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,982.48 : 937,011.56 = 373,078 : x
  2. Step 2: Convert to fraction form
    678,982.48/937,011.56 = 373,078/x
  3. Step 3: Cross multiply
    678,982.48x = 937,011.56 × 373,078
  4. Step 4: Simplify right side
    678,982.48x = 349,578,398,781.68
  5. Step 5: Solve for x
    x = 349,578,398,781.68/678,982.48
  6. Step 6: Final answer
    x = 514,856.29

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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.