Home / 1,221,570.65-1,685,777.67-677,742.12

Finding the Fourth Proportional to 1,221,570.65, 1,685,777.67 and 677,742.12

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Solution

The fourth proportional to 1,221,570.65, 1,685,777.67 and 677,742.12 is: 935,289.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,570.65 : 1,685,777.67 = 677,742.12 : x
  2. Step 2: Convert to fraction form
    1,221,570.65/1,685,777.67 = 677,742.12/x
  3. Step 3: Cross multiply
    1,221,570.65x = 1,685,777.67 × 677,742.12
  4. Step 4: Simplify right side
    1,221,570.65x = 1,142,522,531,914.46
  5. Step 5: Solve for x
    x = 1,142,522,531,914.46/1,221,570.65
  6. Step 6: Final answer
    x = 935,289.77

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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.