Home / 1,559,936.80-2,339,905.20-720,128.80

Finding the Fourth Proportional to 1,559,936.80, 2,339,905.20 and 720,128.80

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Solution

The fourth proportional to 1,559,936.80, 2,339,905.20 and 720,128.80 is: 1,080,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559,936.80 : 2,339,905.20 = 720,128.80 : x
  2. Step 2: Convert to fraction form
    1,559,936.80/2,339,905.20 = 720,128.80/x
  3. Step 3: Cross multiply
    1,559,936.80x = 2,339,905.20 × 720,128.80
  4. Step 4: Simplify right side
    1,559,936.80x = 1,685,033,123,789.76
  5. Step 5: Solve for x
    x = 1,685,033,123,789.76/1,559,936.80
  6. Step 6: Final answer
    x = 1,080,193.20

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Double scale
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Similar ratio
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1.5x scale

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.