Home / 3,178,631.07-4,386,480.38-1,728,326.81

Finding the Fourth Proportional to 3,178,631.07, 4,386,480.38 and 1,728,326.81

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Solution

The fourth proportional to 3,178,631.07, 4,386,480.38 and 1,728,326.81 is: 2,385,074.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,631.07 : 4,386,480.38 = 1,728,326.81 : x
  2. Step 2: Convert to fraction form
    3,178,631.07/4,386,480.38 = 1,728,326.81/x
  3. Step 3: Cross multiply
    3,178,631.07x = 4,386,480.38 × 1,728,326.81
  4. Step 4: Simplify right side
    3,178,631.07x = 7,581,271,620,360.59
  5. Step 5: Solve for x
    x = 7,581,271,620,360.59/3,178,631.07
  6. Step 6: Final answer
    x = 2,385,074.41

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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.