Home / 677,661.18-935,015.46-405,625.68

Finding the Fourth Proportional to 677,661.18, 935,015.46 and 405,625.68

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Solution

The fourth proportional to 677,661.18, 935,015.46 and 405,625.68 is: 559,669.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,661.18 : 935,015.46 = 405,625.68 : x
  2. Step 2: Convert to fraction form
    677,661.18/935,015.46 = 405,625.68/x
  3. Step 3: Cross multiply
    677,661.18x = 935,015.46 × 405,625.68
  4. Step 4: Simplify right side
    677,661.18x = 379,266,281,773.01
  5. Step 5: Solve for x
    x = 379,266,281,773.01/677,661.18
  6. Step 6: Final answer
    x = 559,669.48

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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.