Home / 816,139.20-1,224,208.80-606,187.20

Finding the Fourth Proportional to 816,139.20, 1,224,208.80 and 606,187.20

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Solution

The fourth proportional to 816,139.20, 1,224,208.80 and 606,187.20 is: 909,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,139.20 : 1,224,208.80 = 606,187.20 : x
  2. Step 2: Convert to fraction form
    816,139.20/1,224,208.80 = 606,187.20/x
  3. Step 3: Cross multiply
    816,139.20x = 1,224,208.80 × 606,187.20
  4. Step 4: Simplify right side
    816,139.20x = 742,099,704,687.36
  5. Step 5: Solve for x
    x = 742,099,704,687.36/816,139.20
  6. Step 6: Final answer
    x = 909,280.80

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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.