Home / 2,990,130.10-4,485,195.15-2,187,063.70

Finding the Fourth Proportional to 2,990,130.10, 4,485,195.15 and 2,187,063.70

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Solution

The fourth proportional to 2,990,130.10, 4,485,195.15 and 2,187,063.70 is: 3,280,595.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990,130.10 : 4,485,195.15 = 2,187,063.70 : x
  2. Step 2: Convert to fraction form
    2,990,130.10/4,485,195.15 = 2,187,063.70/x
  3. Step 3: Cross multiply
    2,990,130.10x = 4,485,195.15 × 2,187,063.70
  4. Step 4: Simplify right side
    2,990,130.10x = 9,809,407,499,981.06
  5. Step 5: Solve for x
    x = 9,809,407,499,981.06/2,990,130.10
  6. Step 6: Final answer
    x = 3,280,595.55

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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.