Home / 861,404.78-1,289,849.77-607,309.55

Finding the Fourth Proportional to 861,404.78, 1,289,849.77 and 607,309.55

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Solution

The fourth proportional to 861,404.78, 1,289,849.77 and 607,309.55 is: 909,372.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,404.78 : 1,289,849.77 = 607,309.55 : x
  2. Step 2: Convert to fraction form
    861,404.78/1,289,849.77 = 607,309.55/x
  3. Step 3: Cross multiply
    861,404.78x = 1,289,849.77 × 607,309.55
  4. Step 4: Simplify right side
    861,404.78x = 783,338,082,533.13
  5. Step 5: Solve for x
    x = 783,338,082,533.13/861,404.78
  6. Step 6: Final answer
    x = 909,372.81

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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.