Home / 1,213,802.70-1,820,704.05-415,110.30

Finding the Fourth Proportional to 1,213,802.70, 1,820,704.05 and 415,110.30

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Solution

The fourth proportional to 1,213,802.70, 1,820,704.05 and 415,110.30 is: 622,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,802.70 : 1,820,704.05 = 415,110.30 : x
  2. Step 2: Convert to fraction form
    1,213,802.70/1,820,704.05 = 415,110.30/x
  3. Step 3: Cross multiply
    1,213,802.70x = 1,820,704.05 × 415,110.30
  4. Step 4: Simplify right side
    1,213,802.70x = 755,793,004,406.72
  5. Step 5: Solve for x
    x = 755,793,004,406.72/1,213,802.70
  6. Step 6: Final answer
    x = 622,665.45

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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.