Home / 861,029.49-1,291,491.72-321,181.50

Finding the Fourth Proportional to 861,029.49, 1,291,491.72 and 321,181.50

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Solution

The fourth proportional to 861,029.49, 1,291,491.72 and 321,181.50 is: 481,752.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,029.49 : 1,291,491.72 = 321,181.50 : x
  2. Step 2: Convert to fraction form
    861,029.49/1,291,491.72 = 321,181.50/x
  3. Step 3: Cross multiply
    861,029.49x = 1,291,491.72 × 321,181.50
  4. Step 4: Simplify right side
    861,029.49x = 414,803,247,867.18
  5. Step 5: Solve for x
    x = 414,803,247,867.18/861,029.49
  6. Step 6: Final answer
    x = 481,752.66

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1.5x scale

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.