Home / 426,163.20-638,661.60-283,603.20

Finding the Fourth Proportional to 426,163.20, 638,661.60 and 283,603.20

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Solution

The fourth proportional to 426,163.20, 638,661.60 and 283,603.20 is: 425,016.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,163.20 : 638,661.60 = 283,603.20 : x
  2. Step 2: Convert to fraction form
    426,163.20/638,661.60 = 283,603.20/x
  3. Step 3: Cross multiply
    426,163.20x = 638,661.60 × 283,603.20
  4. Step 4: Simplify right side
    426,163.20x = 181,126,473,477.12
  5. Step 5: Solve for x
    x = 181,126,473,477.12/426,163.20
  6. Step 6: Final answer
    x = 425,016.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.