Home / 1,287,664.56-1,933,392.78-720,157.50

Finding the Fourth Proportional to 1,287,664.56, 1,933,392.78 and 720,157.50

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Solution

The fourth proportional to 1,287,664.56, 1,933,392.78 and 720,157.50 is: 1,081,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,664.56 : 1,933,392.78 = 720,157.50 : x
  2. Step 2: Convert to fraction form
    1,287,664.56/1,933,392.78 = 720,157.50/x
  3. Step 3: Cross multiply
    1,287,664.56x = 1,933,392.78 × 720,157.50
  4. Step 4: Simplify right side
    1,287,664.56x = 1,392,347,310,962.85
  5. Step 5: Solve for x
    x = 1,392,347,310,962.85/1,287,664.56
  6. Step 6: Final answer
    x = 1,081,296.60

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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.