Home / 1,209,408.66-1,668,425.58-779,826.78

Finding the Fourth Proportional to 1,209,408.66, 1,668,425.58 and 779,826.78

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Solution

The fourth proportional to 1,209,408.66, 1,668,425.58 and 779,826.78 is: 1,075,800.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,408.66 : 1,668,425.58 = 779,826.78 : x
  2. Step 2: Convert to fraction form
    1,209,408.66/1,668,425.58 = 779,826.78/x
  3. Step 3: Cross multiply
    1,209,408.66x = 1,668,425.58 × 779,826.78
  4. Step 4: Simplify right side
    1,209,408.66x = 1,301,082,947,721.03
  5. Step 5: Solve for x
    x = 1,301,082,947,721.03/1,209,408.66
  6. Step 6: Final answer
    x = 1,075,800.92

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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.