Home / 1,221,507.84-1,685,682.80-677,643.66

Finding the Fourth Proportional to 1,221,507.84, 1,685,682.80 and 677,643.66

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Solution

The fourth proportional to 1,221,507.84, 1,685,682.80 and 677,643.66 is: 935,149.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,507.84 : 1,685,682.80 = 677,643.66 : x
  2. Step 2: Convert to fraction form
    1,221,507.84/1,685,682.80 = 677,643.66/x
  3. Step 3: Cross multiply
    1,221,507.84x = 1,685,682.80 × 677,643.66
  4. Step 4: Simplify right side
    1,221,507.84x = 1,142,292,262,191.05
  5. Step 5: Solve for x
    x = 1,142,292,262,191.05/1,221,507.84
  6. Step 6: Final answer
    x = 935,149.35

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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.