Home / 1,189,980.83-1,785,321.20-479,643.23

Finding the Fourth Proportional to 1,189,980.83, 1,785,321.20 and 479,643.23

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Solution

The fourth proportional to 1,189,980.83, 1,785,321.20 and 479,643.23 is: 719,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,980.83 : 1,785,321.20 = 479,643.23 : x
  2. Step 2: Convert to fraction form
    1,189,980.83/1,785,321.20 = 479,643.23/x
  3. Step 3: Cross multiply
    1,189,980.83x = 1,785,321.20 × 479,643.23
  4. Step 4: Simplify right side
    1,189,980.83x = 856,317,224,557.26
  5. Step 5: Solve for x
    x = 856,317,224,557.26/1,189,980.83
  6. Step 6: Final answer
    x = 719,605.90

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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.