Home / 1,278,390.24-1,918,318.02-520,091.73

Finding the Fourth Proportional to 1,278,390.24, 1,918,318.02 and 520,091.73

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Solution

The fourth proportional to 1,278,390.24, 1,918,318.02 and 520,091.73 is: 780,435.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,390.24 : 1,918,318.02 = 520,091.73 : x
  2. Step 2: Convert to fraction form
    1,278,390.24/1,918,318.02 = 520,091.73/x
  3. Step 3: Cross multiply
    1,278,390.24x = 1,918,318.02 × 520,091.73
  4. Step 4: Simplify right side
    1,278,390.24x = 997,701,337,711.98
  5. Step 5: Solve for x
    x = 997,701,337,711.98/1,278,390.24
  6. Step 6: Final answer
    x = 780,435.67

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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.