Home / 858,995.70-1,288,493.55-784,200.30

Finding the Fourth Proportional to 858,995.70, 1,288,493.55 and 784,200.30

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Solution

The fourth proportional to 858,995.70, 1,288,493.55 and 784,200.30 is: 1,176,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,995.70 : 1,288,493.55 = 784,200.30 : x
  2. Step 2: Convert to fraction form
    858,995.70/1,288,493.55 = 784,200.30/x
  3. Step 3: Cross multiply
    858,995.70x = 1,288,493.55 × 784,200.30
  4. Step 4: Simplify right side
    858,995.70x = 1,010,437,028,458.07
  5. Step 5: Solve for x
    x = 1,010,437,028,458.07/858,995.70
  6. Step 6: Final answer
    x = 1,176,300.45

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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.