Home / 856,853.80-1,285,280.70-719,996.20

Finding the Fourth Proportional to 856,853.80, 1,285,280.70 and 719,996.20

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Solution

The fourth proportional to 856,853.80, 1,285,280.70 and 719,996.20 is: 1,079,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,853.80 : 1,285,280.70 = 719,996.20 : x
  2. Step 2: Convert to fraction form
    856,853.80/1,285,280.70 = 719,996.20/x
  3. Step 3: Cross multiply
    856,853.80x = 1,285,280.70 × 719,996.20
  4. Step 4: Simplify right side
    856,853.80x = 925,397,219,933.34
  5. Step 5: Solve for x
    x = 925,397,219,933.34/856,853.80
  6. Step 6: Final answer
    x = 1,079,994.30

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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.