Home / 1,210,002.80-1,815,004.72-499,249.60

Finding the Fourth Proportional to 1,210,002.80, 1,815,004.72 and 499,249.60

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Solution

The fourth proportional to 1,210,002.80, 1,815,004.72 and 499,249.60 is: 748,874.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,002.80 : 1,815,004.72 = 499,249.60 : x
  2. Step 2: Convert to fraction form
    1,210,002.80/1,815,004.72 = 499,249.60/x
  3. Step 3: Cross multiply
    1,210,002.80x = 1,815,004.72 × 499,249.60
  4. Step 4: Simplify right side
    1,210,002.80x = 906,140,380,458.11
  5. Step 5: Solve for x
    x = 906,140,380,458.11/1,210,002.80
  6. Step 6: Final answer
    x = 748,874.61

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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.