Home / 920,470.40-1,380,705.60-255,622.40

Finding the Fourth Proportional to 920,470.40, 1,380,705.60 and 255,622.40

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Solution

The fourth proportional to 920,470.40, 1,380,705.60 and 255,622.40 is: 383,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,470.40 : 1,380,705.60 = 255,622.40 : x
  2. Step 2: Convert to fraction form
    920,470.40/1,380,705.60 = 255,622.40/x
  3. Step 3: Cross multiply
    920,470.40x = 1,380,705.60 × 255,622.40
  4. Step 4: Simplify right side
    920,470.40x = 352,939,279,165.44
  5. Step 5: Solve for x
    x = 352,939,279,165.44/920,470.40
  6. Step 6: Final answer
    x = 383,433.60

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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.