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Finding the Fourth Proportional to 678,017, 935,663.46 and 376,259.56

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Solution

The fourth proportional to 678,017, 935,663.46 and 376,259.56 is: 519,238.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,017 : 935,663.46 = 376,259.56 : x
  2. Step 2: Convert to fraction form
    678,017/935,663.46 = 376,259.56/x
  3. Step 3: Cross multiply
    678,017x = 935,663.46 × 376,259.56
  4. Step 4: Simplify right side
    678,017x = 352,052,321,767.68
  5. Step 5: Solve for x
    x = 352,052,321,767.68/678,017
  6. Step 6: Final answer
    x = 519,238.19

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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.