Home / 1,087,921.29-1,631,832.12-378,004.89

Finding the Fourth Proportional to 1,087,921.29, 1,631,832.12 and 378,004.89

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Solution

The fourth proportional to 1,087,921.29, 1,631,832.12 and 378,004.89 is: 566,990.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,921.29 : 1,631,832.12 = 378,004.89 : x
  2. Step 2: Convert to fraction form
    1,087,921.29/1,631,832.12 = 378,004.89/x
  3. Step 3: Cross multiply
    1,087,921.29x = 1,631,832.12 × 378,004.89
  4. Step 4: Simplify right side
    1,087,921.29x = 616,840,521,019.07
  5. Step 5: Solve for x
    x = 616,840,521,019.07/1,087,921.29
  6. Step 6: Final answer
    x = 566,990.03

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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.