Home / 2,151,867.65-2,969,263.40-1,221,430.82

Finding the Fourth Proportional to 2,151,867.65, 2,969,263.40 and 1,221,430.82

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Solution

The fourth proportional to 2,151,867.65, 2,969,263.40 and 1,221,430.82 is: 1,685,396.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151,867.65 : 2,969,263.40 = 1,221,430.82 : x
  2. Step 2: Convert to fraction form
    2,151,867.65/2,969,263.40 = 1,221,430.82/x
  3. Step 3: Cross multiply
    2,151,867.65x = 2,969,263.40 × 1,221,430.82
  4. Step 4: Simplify right side
    2,151,867.65x = 3,626,749,808,504.52
  5. Step 5: Solve for x
    x = 3,626,749,808,504.52/2,151,867.65
  6. Step 6: Final answer
    x = 1,685,396.32

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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.