Home / 2,990,143.80-4,485,215.70-2,972,429.10

Finding the Fourth Proportional to 2,990,143.80, 4,485,215.70 and 2,972,429.10

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Solution

The fourth proportional to 2,990,143.80, 4,485,215.70 and 2,972,429.10 is: 4,458,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990,143.80 : 4,485,215.70 = 2,972,429.10 : x
  2. Step 2: Convert to fraction form
    2,990,143.80/4,485,215.70 = 2,972,429.10/x
  3. Step 3: Cross multiply
    2,990,143.80x = 4,485,215.70 × 2,972,429.10
  4. Step 4: Simplify right side
    2,990,143.80x = 13,331,985,666,456.87
  5. Step 5: Solve for x
    x = 13,331,985,666,456.87/2,990,143.80
  6. Step 6: Final answer
    x = 4,458,643.65

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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.