Home / 899,279.96-1,240,969.32-491,395.79

Finding the Fourth Proportional to 899,279.96, 1,240,969.32 and 491,395.79

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Solution

The fourth proportional to 899,279.96, 1,240,969.32 and 491,395.79 is: 678,105.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,279.96 : 1,240,969.32 = 491,395.79 : x
  2. Step 2: Convert to fraction form
    899,279.96/1,240,969.32 = 491,395.79/x
  3. Step 3: Cross multiply
    899,279.96x = 1,240,969.32 × 491,395.79
  4. Step 4: Simplify right side
    899,279.96x = 609,807,102,469.59
  5. Step 5: Solve for x
    x = 609,807,102,469.59/899,279.96
  6. Step 6: Final answer
    x = 678,105.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.