Home / 2,151,818.85-2,968,758.88-1,221,415.74

Finding the Fourth Proportional to 2,151,818.85, 2,968,758.88 and 1,221,415.74

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Solution

The fourth proportional to 2,151,818.85, 2,968,758.88 and 1,221,415.74 is: 1,685,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151,818.85 : 2,968,758.88 = 1,221,415.74 : x
  2. Step 2: Convert to fraction form
    2,151,818.85/2,968,758.88 = 1,221,415.74/x
  3. Step 3: Cross multiply
    2,151,818.85x = 2,968,758.88 × 1,221,415.74
  4. Step 4: Simplify right side
    2,151,818.85x = 3,626,088,818,189.69
  5. Step 5: Solve for x
    x = 3,626,088,818,189.69/2,151,818.85
  6. Step 6: Final answer
    x = 1,685,127.36

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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.