Home / 1,021,701.80-1,529,928.30-810,000.20

Finding the Fourth Proportional to 1,021,701.80, 1,529,928.30 and 810,000.20

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Solution

The fourth proportional to 1,021,701.80, 1,529,928.30 and 810,000.20 is: 1,212,919.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,701.80 : 1,529,928.30 = 810,000.20 : x
  2. Step 2: Convert to fraction form
    1,021,701.80/1,529,928.30 = 810,000.20/x
  3. Step 3: Cross multiply
    1,021,701.80x = 1,529,928.30 × 810,000.20
  4. Step 4: Simplify right side
    1,021,701.80x = 1,239,242,228,985.66
  5. Step 5: Solve for x
    x = 1,239,242,228,985.66/1,021,701.80
  6. Step 6: Final answer
    x = 1,212,919.69

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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.