Home / 1,230,280.20-1,845,420.30-343,816.20

Finding the Fourth Proportional to 1,230,280.20, 1,845,420.30 and 343,816.20

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Solution

The fourth proportional to 1,230,280.20, 1,845,420.30 and 343,816.20 is: 515,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,280.20 : 1,845,420.30 = 343,816.20 : x
  2. Step 2: Convert to fraction form
    1,230,280.20/1,845,420.30 = 343,816.20/x
  3. Step 3: Cross multiply
    1,230,280.20x = 1,845,420.30 × 343,816.20
  4. Step 4: Simplify right side
    1,230,280.20x = 634,485,394,948.86
  5. Step 5: Solve for x
    x = 634,485,394,948.86/1,230,280.20
  6. Step 6: Final answer
    x = 515,724.30

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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.