Home / 2,116,035.61-2,921,022.75-1,428,638.65

Finding the Fourth Proportional to 2,116,035.61, 2,921,022.75 and 1,428,638.65

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Solution

The fourth proportional to 2,116,035.61, 2,921,022.75 and 1,428,638.65 is: 1,972,124.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116,035.61 : 2,921,022.75 = 1,428,638.65 : x
  2. Step 2: Convert to fraction form
    2,116,035.61/2,921,022.75 = 1,428,638.65/x
  3. Step 3: Cross multiply
    2,116,035.61x = 2,921,022.75 × 1,428,638.65
  4. Step 4: Simplify right side
    2,116,035.61x = 4,173,085,998,179.29
  5. Step 5: Solve for x
    x = 4,173,085,998,179.29/2,116,035.61
  6. Step 6: Final answer
    x = 1,972,124.66

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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.