Home / 811,300.80-1,216,951.20-496,113.60

Finding the Fourth Proportional to 811,300.80, 1,216,951.20 and 496,113.60

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Solution

The fourth proportional to 811,300.80, 1,216,951.20 and 496,113.60 is: 744,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,300.80 : 1,216,951.20 = 496,113.60 : x
  2. Step 2: Convert to fraction form
    811,300.80/1,216,951.20 = 496,113.60/x
  3. Step 3: Cross multiply
    811,300.80x = 1,216,951.20 × 496,113.60
  4. Step 4: Simplify right side
    811,300.80x = 603,746,040,856.32
  5. Step 5: Solve for x
    x = 603,746,040,856.32/811,300.80
  6. Step 6: Final answer
    x = 744,170.40

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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.