Home / 1,212,987.80-1,819,226.55-613,385.30

Finding the Fourth Proportional to 1,212,987.80, 1,819,226.55 and 613,385.30

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Solution

The fourth proportional to 1,212,987.80, 1,819,226.55 and 613,385.30 is: 919,948.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,987.80 : 1,819,226.55 = 613,385.30 : x
  2. Step 2: Convert to fraction form
    1,212,987.80/1,819,226.55 = 613,385.30/x
  3. Step 3: Cross multiply
    1,212,987.80x = 1,819,226.55 × 613,385.30
  4. Step 4: Simplify right side
    1,212,987.80x = 1,115,886,823,139.72
  5. Step 5: Solve for x
    x = 1,115,886,823,139.72/1,212,987.80
  6. Step 6: Final answer
    x = 919,948.93

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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.