Home / 2,121,423.39-2,927,872.81-1,191,235.57

Finding the Fourth Proportional to 2,121,423.39, 2,927,872.81 and 1,191,235.57

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Solution

The fourth proportional to 2,121,423.39, 2,927,872.81 and 1,191,235.57 is: 1,644,078.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,423.39 : 2,927,872.81 = 1,191,235.57 : x
  2. Step 2: Convert to fraction form
    2,121,423.39/2,927,872.81 = 1,191,235.57/x
  3. Step 3: Cross multiply
    2,121,423.39x = 2,927,872.81 × 1,191,235.57
  4. Step 4: Simplify right side
    2,121,423.39x = 3,487,786,221,068.49
  5. Step 5: Solve for x
    x = 3,487,786,221,068.49/2,121,423.39
  6. Step 6: Final answer
    x = 1,644,078.33

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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.