Home / 920,541.40-1,380,812.10-255,693.40

Finding the Fourth Proportional to 920,541.40, 1,380,812.10 and 255,693.40

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Solution

The fourth proportional to 920,541.40, 1,380,812.10 and 255,693.40 is: 383,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,541.40 : 1,380,812.10 = 255,693.40 : x
  2. Step 2: Convert to fraction form
    920,541.40/1,380,812.10 = 255,693.40/x
  3. Step 3: Cross multiply
    920,541.40x = 1,380,812.10 × 255,693.40
  4. Step 4: Simplify right side
    920,541.40x = 353,064,540,610.14
  5. Step 5: Solve for x
    x = 353,064,540,610.14/920,541.40
  6. Step 6: Final answer
    x = 383,540.10

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Half scale
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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.