Home / 865,863.20-1,298,999.60-274,887.20

Finding the Fourth Proportional to 865,863.20, 1,298,999.60 and 274,887.20

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Solution

The fourth proportional to 865,863.20, 1,298,999.60 and 274,887.20 is: 412,395.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,863.20 : 1,298,999.60 = 274,887.20 : x
  2. Step 2: Convert to fraction form
    865,863.20/1,298,999.60 = 274,887.20/x
  3. Step 3: Cross multiply
    865,863.20x = 1,298,999.60 × 274,887.20
  4. Step 4: Simplify right side
    865,863.20x = 357,078,362,845.12
  5. Step 5: Solve for x
    x = 357,078,362,845.12/865,863.20
  6. Step 6: Final answer
    x = 412,395.82

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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.