Home / 3,126,415.20-4,689,622.80-2,118,645.60

Finding the Fourth Proportional to 3,126,415.20, 4,689,622.80 and 2,118,645.60

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Solution

The fourth proportional to 3,126,415.20, 4,689,622.80 and 2,118,645.60 is: 3,177,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126,415.20 : 4,689,622.80 = 2,118,645.60 : x
  2. Step 2: Convert to fraction form
    3,126,415.20/4,689,622.80 = 2,118,645.60/x
  3. Step 3: Cross multiply
    3,126,415.20x = 4,689,622.80 × 2,118,645.60
  4. Step 4: Simplify right side
    3,126,415.20x = 9,935,648,710,879.68
  5. Step 5: Solve for x
    x = 9,935,648,710,879.68/3,126,415.20
  6. Step 6: Final answer
    x = 3,177,968.40

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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.