Home / 1,451,840.80-2,175,428.40-1,213,895.20

Finding the Fourth Proportional to 1,451,840.80, 2,175,428.40 and 1,213,895.20

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Solution

The fourth proportional to 1,451,840.80, 2,175,428.40 and 1,213,895.20 is: 1,818,892.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451,840.80 : 2,175,428.40 = 1,213,895.20 : x
  2. Step 2: Convert to fraction form
    1,451,840.80/2,175,428.40 = 1,213,895.20/x
  3. Step 3: Cross multiply
    1,451,840.80x = 2,175,428.40 × 1,213,895.20
  4. Step 4: Simplify right side
    1,451,840.80x = 2,640,742,092,703.68
  5. Step 5: Solve for x
    x = 2,640,742,092,703.68/1,451,840.80
  6. Step 6: Final answer
    x = 1,818,892.33

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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.