Home / 1,080,089.43-1,620,128.34-440,390.72

Finding the Fourth Proportional to 1,080,089.43, 1,620,128.34 and 440,390.72

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Solution

The fourth proportional to 1,080,089.43, 1,620,128.34 and 440,390.72 is: 660,583.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,089.43 : 1,620,128.34 = 440,390.72 : x
  2. Step 2: Convert to fraction form
    1,080,089.43/1,620,128.34 = 440,390.72/x
  3. Step 3: Cross multiply
    1,080,089.43x = 1,620,128.34 × 440,390.72
  4. Step 4: Simplify right side
    1,080,089.43x = 713,489,478,044.36
  5. Step 5: Solve for x
    x = 713,489,478,044.36/1,080,089.43
  6. Step 6: Final answer
    x = 660,583.71

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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.