Home / 1,206,689.90-1,665,284.40-690,605.80

Finding the Fourth Proportional to 1,206,689.90, 1,665,284.40 and 690,605.80

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Solution

The fourth proportional to 1,206,689.90, 1,665,284.40 and 690,605.80 is: 953,065.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,689.90 : 1,665,284.40 = 690,605.80 : x
  2. Step 2: Convert to fraction form
    1,206,689.90/1,665,284.40 = 690,605.80/x
  3. Step 3: Cross multiply
    1,206,689.90x = 1,665,284.40 × 690,605.80
  4. Step 4: Simplify right side
    1,206,689.90x = 1,150,055,065,289.52
  5. Step 5: Solve for x
    x = 1,150,055,065,289.52/1,206,689.90
  6. Step 6: Final answer
    x = 953,065.96

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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.