Home / 687,825.72-1,031,387.37-404,070.48

Finding the Fourth Proportional to 687,825.72, 1,031,387.37 and 404,070.48

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Solution

The fourth proportional to 687,825.72, 1,031,387.37 and 404,070.48 is: 605,899.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,825.72 : 1,031,387.37 = 404,070.48 : x
  2. Step 2: Convert to fraction form
    687,825.72/1,031,387.37 = 404,070.48/x
  3. Step 3: Cross multiply
    687,825.72x = 1,031,387.37 × 404,070.48
  4. Step 4: Simplify right side
    687,825.72x = 416,753,189,661.84
  5. Step 5: Solve for x
    x = 416,753,189,661.84/687,825.72
  6. Step 6: Final answer
    x = 605,899.40

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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.