Home / 1,212,000.80-1,818,001.20-413,211.20

Finding the Fourth Proportional to 1,212,000.80, 1,818,001.20 and 413,211.20

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Solution

The fourth proportional to 1,212,000.80, 1,818,001.20 and 413,211.20 is: 619,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,000.80 : 1,818,001.20 = 413,211.20 : x
  2. Step 2: Convert to fraction form
    1,212,000.80/1,818,001.20 = 413,211.20/x
  3. Step 3: Cross multiply
    1,212,000.80x = 1,818,001.20 × 413,211.20
  4. Step 4: Simplify right side
    1,212,000.80x = 751,218,457,453.44
  5. Step 5: Solve for x
    x = 751,218,457,453.44/1,212,000.80
  6. Step 6: Final answer
    x = 619,816.80

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1.5x scale

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.