Home / 1,213,808.76-1,820,910.24-455,709.78

Finding the Fourth Proportional to 1,213,808.76, 1,820,910.24 and 455,709.78

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Solution

The fourth proportional to 1,213,808.76, 1,820,910.24 and 455,709.78 is: 683,638.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,808.76 : 1,820,910.24 = 455,709.78 : x
  2. Step 2: Convert to fraction form
    1,213,808.76/1,820,910.24 = 455,709.78/x
  3. Step 3: Cross multiply
    1,213,808.76x = 1,820,910.24 × 455,709.78
  4. Step 4: Simplify right side
    1,213,808.76x = 829,806,604,870.15
  5. Step 5: Solve for x
    x = 829,806,604,870.15/1,213,808.76
  6. Step 6: Final answer
    x = 683,638.67

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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.