Home / 2,115,431.22-2,921,698.68-1,425,913.86

Finding the Fourth Proportional to 2,115,431.22, 2,921,698.68 and 1,425,913.86

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Solution

The fourth proportional to 2,115,431.22, 2,921,698.68 and 1,425,913.86 is: 1,969,381.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,431.22 : 2,921,698.68 = 1,425,913.86 : x
  2. Step 2: Convert to fraction form
    2,115,431.22/2,921,698.68 = 1,425,913.86/x
  3. Step 3: Cross multiply
    2,115,431.22x = 2,921,698.68 × 1,425,913.86
  4. Step 4: Simplify right side
    2,115,431.22x = 4,166,090,642,555.71
  5. Step 5: Solve for x
    x = 4,166,090,642,555.71/2,115,431.22
  6. Step 6: Final answer
    x = 1,969,381.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.