Home / 1,207,107.70-1,810,661.55-408,415.30

Finding the Fourth Proportional to 1,207,107.70, 1,810,661.55 and 408,415.30

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Solution

The fourth proportional to 1,207,107.70, 1,810,661.55 and 408,415.30 is: 612,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,107.70 : 1,810,661.55 = 408,415.30 : x
  2. Step 2: Convert to fraction form
    1,207,107.70/1,810,661.55 = 408,415.30/x
  3. Step 3: Cross multiply
    1,207,107.70x = 1,810,661.55 × 408,415.30
  4. Step 4: Simplify right side
    1,207,107.70x = 739,501,880,141.72
  5. Step 5: Solve for x
    x = 739,501,880,141.72/1,207,107.70
  6. Step 6: Final answer
    x = 612,622.95

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Half scale
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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.