Home / 1,321,389.55-1,823,468.84-717,764.59

Finding the Fourth Proportional to 1,321,389.55, 1,823,468.84 and 717,764.59

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Solution

The fourth proportional to 1,321,389.55, 1,823,468.84 and 717,764.59 is: 990,488.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,389.55 : 1,823,468.84 = 717,764.59 : x
  2. Step 2: Convert to fraction form
    1,321,389.55/1,823,468.84 = 717,764.59/x
  3. Step 3: Cross multiply
    1,321,389.55x = 1,823,468.84 × 717,764.59
  4. Step 4: Simplify right side
    1,321,389.55x = 1,308,821,355,203.03
  5. Step 5: Solve for x
    x = 1,308,821,355,203.03/1,321,389.55
  6. Step 6: Final answer
    x = 990,488.66

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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.