Home / 1,240,400.20-1,860,600.30-341,840.20

Finding the Fourth Proportional to 1,240,400.20, 1,860,600.30 and 341,840.20

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Solution

The fourth proportional to 1,240,400.20, 1,860,600.30 and 341,840.20 is: 512,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,400.20 : 1,860,600.30 = 341,840.20 : x
  2. Step 2: Convert to fraction form
    1,240,400.20/1,860,600.30 = 341,840.20/x
  3. Step 3: Cross multiply
    1,240,400.20x = 1,860,600.30 × 341,840.20
  4. Step 4: Simplify right side
    1,240,400.20x = 636,027,978,672.06
  5. Step 5: Solve for x
    x = 636,027,978,672.06/1,240,400.20
  6. Step 6: Final answer
    x = 512,760.30

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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.