Home / 3,106,139.40-4,656,438.90-1,212,440.40

Finding the Fourth Proportional to 3,106,139.40, 4,656,438.90 and 1,212,440.40

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Solution

The fourth proportional to 3,106,139.40, 4,656,438.90 and 1,212,440.40 is: 1,817,579.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106,139.40 : 4,656,438.90 = 1,212,440.40 : x
  2. Step 2: Convert to fraction form
    3,106,139.40/4,656,438.90 = 1,212,440.40/x
  3. Step 3: Cross multiply
    3,106,139.40x = 4,656,438.90 × 1,212,440.40
  4. Step 4: Simplify right side
    3,106,139.40x = 5,645,654,642,491.56
  5. Step 5: Solve for x
    x = 5,645,654,642,491.56/3,106,139.40
  6. Step 6: Final answer
    x = 1,817,579.29

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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.