Home / 3,120,643.80-4,680,965.70-2,663,998.20

Finding the Fourth Proportional to 3,120,643.80, 4,680,965.70 and 2,663,998.20

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Solution

The fourth proportional to 3,120,643.80, 4,680,965.70 and 2,663,998.20 is: 3,995,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,643.80 : 4,680,965.70 = 2,663,998.20 : x
  2. Step 2: Convert to fraction form
    3,120,643.80/4,680,965.70 = 2,663,998.20/x
  3. Step 3: Cross multiply
    3,120,643.80x = 4,680,965.70 × 2,663,998.20
  4. Step 4: Simplify right side
    3,120,643.80x = 12,470,084,199,061.74
  5. Step 5: Solve for x
    x = 12,470,084,199,061.74/3,120,643.80
  6. Step 6: Final answer
    x = 3,995,997.30

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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.