Home / 2,935,815.20-4,403,722.80-1,979,221.40

Finding the Fourth Proportional to 2,935,815.20, 4,403,722.80 and 1,979,221.40

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Solution

The fourth proportional to 2,935,815.20, 4,403,722.80 and 1,979,221.40 is: 2,968,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,935,815.20 : 4,403,722.80 = 1,979,221.40 : x
  2. Step 2: Convert to fraction form
    2,935,815.20/4,403,722.80 = 1,979,221.40/x
  3. Step 3: Cross multiply
    2,935,815.20x = 4,403,722.80 × 1,979,221.40
  4. Step 4: Simplify right side
    2,935,815.20x = 8,715,942,405,427.92
  5. Step 5: Solve for x
    x = 8,715,942,405,427.92/2,935,815.20
  6. Step 6: Final answer
    x = 2,968,832.10

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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.