Home / 839,920.19-1,257,918.38-772,099.19

Finding the Fourth Proportional to 839,920.19, 1,257,918.38 and 772,099.19

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Solution

The fourth proportional to 839,920.19, 1,257,918.38 and 772,099.19 is: 1,156,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,920.19 : 1,257,918.38 = 772,099.19 : x
  2. Step 2: Convert to fraction form
    839,920.19/1,257,918.38 = 772,099.19/x
  3. Step 3: Cross multiply
    839,920.19x = 1,257,918.38 × 772,099.19
  4. Step 4: Simplify right side
    839,920.19x = 971,237,752,134.02
  5. Step 5: Solve for x
    x = 971,237,752,134.02/839,920.19
  6. Step 6: Final answer
    x = 1,156,345.29

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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.