Home / 805,965.80-1,208,948.70-770,536.40

Finding the Fourth Proportional to 805,965.80, 1,208,948.70 and 770,536.40

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Solution

The fourth proportional to 805,965.80, 1,208,948.70 and 770,536.40 is: 1,155,804.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,965.80 : 1,208,948.70 = 770,536.40 : x
  2. Step 2: Convert to fraction form
    805,965.80/1,208,948.70 = 770,536.40/x
  3. Step 3: Cross multiply
    805,965.80x = 1,208,948.70 × 770,536.40
  4. Step 4: Simplify right side
    805,965.80x = 931,538,979,082.68
  5. Step 5: Solve for x
    x = 931,538,979,082.68/805,965.80
  6. Step 6: Final answer
    x = 1,155,804.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.