Home / 899,183.70-1,240,859.02-491,276.78

Finding the Fourth Proportional to 899,183.70, 1,240,859.02 and 491,276.78

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Solution

The fourth proportional to 899,183.70, 1,240,859.02 and 491,276.78 is: 677,954.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,183.70 : 1,240,859.02 = 491,276.78 : x
  2. Step 2: Convert to fraction form
    899,183.70/1,240,859.02 = 491,276.78/x
  3. Step 3: Cross multiply
    899,183.70x = 1,240,859.02 × 491,276.78
  4. Step 4: Simplify right side
    899,183.70x = 609,605,223,779.56
  5. Step 5: Solve for x
    x = 609,605,223,779.56/899,183.70
  6. Step 6: Final answer
    x = 677,954.04

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Double scale
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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.