Home / 1,618,709.80-2,429,619.90-820,892.20

Finding the Fourth Proportional to 1,618,709.80, 2,429,619.90 and 820,892.20

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Solution

The fourth proportional to 1,618,709.80, 2,429,619.90 and 820,892.20 is: 1,232,126.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618,709.80 : 2,429,619.90 = 820,892.20 : x
  2. Step 2: Convert to fraction form
    1,618,709.80/2,429,619.90 = 820,892.20/x
  3. Step 3: Cross multiply
    1,618,709.80x = 2,429,619.90 × 820,892.20
  4. Step 4: Simplify right side
    1,618,709.80x = 1,994,456,024,874.78
  5. Step 5: Solve for x
    x = 1,994,456,024,874.78/1,618,709.80
  6. Step 6: Final answer
    x = 1,232,126.98

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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.