Home / 720,687.20-1,080,186.40-293,956.70

Finding the Fourth Proportional to 720,687.20, 1,080,186.40 and 293,956.70

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Solution

The fourth proportional to 720,687.20, 1,080,186.40 and 293,956.70 is: 440,590.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,687.20 : 1,080,186.40 = 293,956.70 : x
  2. Step 2: Convert to fraction form
    720,687.20/1,080,186.40 = 293,956.70/x
  3. Step 3: Cross multiply
    720,687.20x = 1,080,186.40 × 293,956.70
  4. Step 4: Simplify right side
    720,687.20x = 317,528,029,528.88
  5. Step 5: Solve for x
    x = 317,528,029,528.88/720,687.20
  6. Step 6: Final answer
    x = 440,590.63

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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.