Home / 1,387,257.20-2,080,885.80-440,723.60

Finding the Fourth Proportional to 1,387,257.20, 2,080,885.80 and 440,723.60

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Solution

The fourth proportional to 1,387,257.20, 2,080,885.80 and 440,723.60 is: 661,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,257.20 : 2,080,885.80 = 440,723.60 : x
  2. Step 2: Convert to fraction form
    1,387,257.20/2,080,885.80 = 440,723.60/x
  3. Step 3: Cross multiply
    1,387,257.20x = 2,080,885.80 × 440,723.60
  4. Step 4: Simplify right side
    1,387,257.20x = 917,095,480,964.88
  5. Step 5: Solve for x
    x = 917,095,480,964.88/1,387,257.20
  6. Step 6: Final answer
    x = 661,085.40

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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.