Home / 1,129,722.83-1,559,015.69-620,425.21

Finding the Fourth Proportional to 1,129,722.83, 1,559,015.69 and 620,425.21

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Solution

The fourth proportional to 1,129,722.83, 1,559,015.69 and 620,425.21 is: 856,185.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,722.83 : 1,559,015.69 = 620,425.21 : x
  2. Step 2: Convert to fraction form
    1,129,722.83/1,559,015.69 = 620,425.21/x
  3. Step 3: Cross multiply
    1,129,722.83x = 1,559,015.69 × 620,425.21
  4. Step 4: Simplify right side
    1,129,722.83x = 967,252,636,861.55
  5. Step 5: Solve for x
    x = 967,252,636,861.55/1,129,722.83
  6. Step 6: Final answer
    x = 856,185.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.