Home / 1,377,351.20-2,066,026.80-430,817.60

Finding the Fourth Proportional to 1,377,351.20, 2,066,026.80 and 430,817.60

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Solution

The fourth proportional to 1,377,351.20, 2,066,026.80 and 430,817.60 is: 646,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,351.20 : 2,066,026.80 = 430,817.60 : x
  2. Step 2: Convert to fraction form
    1,377,351.20/2,066,026.80 = 430,817.60/x
  3. Step 3: Cross multiply
    1,377,351.20x = 2,066,026.80 × 430,817.60
  4. Step 4: Simplify right side
    1,377,351.20x = 890,080,707,511.68
  5. Step 5: Solve for x
    x = 890,080,707,511.68/1,377,351.20
  6. Step 6: Final answer
    x = 646,226.40

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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.