Home / 1,290,158.22-1,780,464.03-709,425.57

Finding the Fourth Proportional to 1,290,158.22, 1,780,464.03 and 709,425.57

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Solution

The fourth proportional to 1,290,158.22, 1,780,464.03 and 709,425.57 is: 979,032.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,158.22 : 1,780,464.03 = 709,425.57 : x
  2. Step 2: Convert to fraction form
    1,290,158.22/1,780,464.03 = 709,425.57/x
  3. Step 3: Cross multiply
    1,290,158.22x = 1,780,464.03 × 709,425.57
  4. Step 4: Simplify right side
    1,290,158.22x = 1,263,106,709,347.25
  5. Step 5: Solve for x
    x = 1,263,106,709,347.25/1,290,158.22
  6. Step 6: Final answer
    x = 979,032.41

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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.