Home / 887,065.70-1,330,598.55-512,651.30

Finding the Fourth Proportional to 887,065.70, 1,330,598.55 and 512,651.30

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Solution

The fourth proportional to 887,065.70, 1,330,598.55 and 512,651.30 is: 768,976.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,065.70 : 1,330,598.55 = 512,651.30 : x
  2. Step 2: Convert to fraction form
    887,065.70/1,330,598.55 = 512,651.30/x
  3. Step 3: Cross multiply
    887,065.70x = 1,330,598.55 × 512,651.30
  4. Step 4: Simplify right side
    887,065.70x = 682,133,076,435.62
  5. Step 5: Solve for x
    x = 682,133,076,435.62/887,065.70
  6. Step 6: Final answer
    x = 768,976.95

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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.