Home / 3,121,213.80-4,680,848.70-1,228,535.40

Finding the Fourth Proportional to 3,121,213.80, 4,680,848.70 and 1,228,535.40

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Solution

The fourth proportional to 3,121,213.80, 4,680,848.70 and 1,228,535.40 is: 1,842,420.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,213.80 : 4,680,848.70 = 1,228,535.40 : x
  2. Step 2: Convert to fraction form
    3,121,213.80/4,680,848.70 = 1,228,535.40/x
  3. Step 3: Cross multiply
    3,121,213.80x = 4,680,848.70 × 1,228,535.40
  4. Step 4: Simplify right side
    3,121,213.80x = 5,750,588,329,993.98
  5. Step 5: Solve for x
    x = 5,750,588,329,993.98/3,121,213.80
  6. Step 6: Final answer
    x = 1,842,420.51

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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.