Home / 3,178,513.59-4,386,317.80-1,728,209.02

Finding the Fourth Proportional to 3,178,513.59, 4,386,317.80 and 1,728,209.02

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Solution

The fourth proportional to 3,178,513.59, 4,386,317.80 and 1,728,209.02 is: 2,384,911.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,513.59 : 4,386,317.80 = 1,728,209.02 : x
  2. Step 2: Convert to fraction form
    3,178,513.59/4,386,317.80 = 1,728,209.02/x
  3. Step 3: Cross multiply
    3,178,513.59x = 4,386,317.80 × 1,728,209.02
  4. Step 4: Simplify right side
    3,178,513.59x = 7,580,473,986,546.56
  5. Step 5: Solve for x
    x = 7,580,473,986,546.56/3,178,513.59
  6. Step 6: Final answer
    x = 2,384,911.62

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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.