Home / 649,311.20-973,966.80-383,199.20

Finding the Fourth Proportional to 649,311.20, 973,966.80 and 383,199.20

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Solution

The fourth proportional to 649,311.20, 973,966.80 and 383,199.20 is: 574,798.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,311.20 : 973,966.80 = 383,199.20 : x
  2. Step 2: Convert to fraction form
    649,311.20/973,966.80 = 383,199.20/x
  3. Step 3: Cross multiply
    649,311.20x = 973,966.80 × 383,199.20
  4. Step 4: Simplify right side
    649,311.20x = 373,223,298,586.56
  5. Step 5: Solve for x
    x = 373,223,298,586.56/649,311.20
  6. Step 6: Final answer
    x = 574,798.80

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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.