Home / 1,191,920.09-1,787,840.64-518,002.11

Finding the Fourth Proportional to 1,191,920.09, 1,787,840.64 and 518,002.11

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Solution

The fourth proportional to 1,191,920.09, 1,787,840.64 and 518,002.11 is: 776,986.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,920.09 : 1,787,840.64 = 518,002.11 : x
  2. Step 2: Convert to fraction form
    1,191,920.09/1,787,840.64 = 518,002.11/x
  3. Step 3: Cross multiply
    1,191,920.09x = 1,787,840.64 × 518,002.11
  4. Step 4: Simplify right side
    1,191,920.09x = 926,105,223,863.75
  5. Step 5: Solve for x
    x = 926,105,223,863.75/1,191,920.09
  6. Step 6: Final answer
    x = 776,986.00

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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.