Home / 403,869.40-605,832.90-123,386.20

Finding the Fourth Proportional to 403,869.40, 605,832.90 and 123,386.20

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Solution

The fourth proportional to 403,869.40, 605,832.90 and 123,386.20 is: 185,088.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,869.40 : 605,832.90 = 123,386.20 : x
  2. Step 2: Convert to fraction form
    403,869.40/605,832.90 = 123,386.20/x
  3. Step 3: Cross multiply
    403,869.40x = 605,832.90 × 123,386.20
  4. Step 4: Simplify right side
    403,869.40x = 74,751,419,365.98
  5. Step 5: Solve for x
    x = 74,751,419,365.98/403,869.40
  6. Step 6: Final answer
    x = 185,088.10

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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.