Home / 1,451,638.80-2,175,125.40-1,213,693.20

Finding the Fourth Proportional to 1,451,638.80, 2,175,125.40 and 1,213,693.20

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Solution

The fourth proportional to 1,451,638.80, 2,175,125.40 and 1,213,693.20 is: 1,818,589.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451,638.80 : 2,175,125.40 = 1,213,693.20 : x
  2. Step 2: Convert to fraction form
    1,451,638.80/2,175,125.40 = 1,213,693.20/x
  3. Step 3: Cross multiply
    1,451,638.80x = 2,175,125.40 × 1,213,693.20
  4. Step 4: Simplify right side
    1,451,638.80x = 2,639,934,907,127.28
  5. Step 5: Solve for x
    x = 2,639,934,907,127.28/1,451,638.80
  6. Step 6: Final answer
    x = 1,818,589.38

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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.