Home / 1,392,288.86-2,087,411.85-445,114.46

Finding the Fourth Proportional to 1,392,288.86, 2,087,411.85 and 445,114.46

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Solution

The fourth proportional to 1,392,288.86, 2,087,411.85 and 445,114.46 is: 667,345.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,288.86 : 2,087,411.85 = 445,114.46 : x
  2. Step 2: Convert to fraction form
    1,392,288.86/2,087,411.85 = 445,114.46/x
  3. Step 3: Cross multiply
    1,392,288.86x = 2,087,411.85 × 445,114.46
  4. Step 4: Simplify right side
    1,392,288.86x = 929,137,198,410.35
  5. Step 5: Solve for x
    x = 929,137,198,410.35/1,392,288.86
  6. Step 6: Final answer
    x = 667,345.14

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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.