Home / 986,515.57-1,361,618.97-578,748.40

Finding the Fourth Proportional to 986,515.57, 1,361,618.97 and 578,748.40

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Solution

The fourth proportional to 986,515.57, 1,361,618.97 and 578,748.40 is: 798,806.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,515.57 : 1,361,618.97 = 578,748.40 : x
  2. Step 2: Convert to fraction form
    986,515.57/1,361,618.97 = 578,748.40/x
  3. Step 3: Cross multiply
    986,515.57x = 1,361,618.97 × 578,748.40
  4. Step 4: Simplify right side
    986,515.57x = 788,034,800,297.15
  5. Step 5: Solve for x
    x = 788,034,800,297.15/986,515.57
  6. Step 6: Final answer
    x = 798,806.25

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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.