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Finding the Fourth Proportional to 3,147,943.35, 4,721,386.81 and 873,698.79

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Solution

The fourth proportional to 3,147,943.35, 4,721,386.81 and 873,698.79 is: 1,310,401.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147,943.35 : 4,721,386.81 = 873,698.79 : x
  2. Step 2: Convert to fraction form
    3,147,943.35/4,721,386.81 = 873,698.79/x
  3. Step 3: Cross multiply
    3,147,943.35x = 4,721,386.81 × 873,698.79
  4. Step 4: Simplify right side
    3,147,943.35x = 4,125,069,940,146.21
  5. Step 5: Solve for x
    x = 4,125,069,940,146.21/3,147,943.35
  6. Step 6: Final answer
    x = 1,310,401.58

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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.