Home / 920,416.40-1,380,624.60-255,568.40

Finding the Fourth Proportional to 920,416.40, 1,380,624.60 and 255,568.40

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Solution

The fourth proportional to 920,416.40, 1,380,624.60 and 255,568.40 is: 383,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,416.40 : 1,380,624.60 = 255,568.40 : x
  2. Step 2: Convert to fraction form
    920,416.40/1,380,624.60 = 255,568.40/x
  3. Step 3: Cross multiply
    920,416.40x = 1,380,624.60 × 255,568.40
  4. Step 4: Simplify right side
    920,416.40x = 352,844,020,022.64
  5. Step 5: Solve for x
    x = 352,844,020,022.64/920,416.40
  6. Step 6: Final answer
    x = 383,352.60

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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.