Home / 5,428,643.76-8,143,245.90-1,385,166.96

Finding the Fourth Proportional to 5,428,643.76, 8,143,245.90 and 1,385,166.96

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Solution

The fourth proportional to 5,428,643.76, 8,143,245.90 and 1,385,166.96 is: 2,077,821.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428,643.76 : 8,143,245.90 = 1,385,166.96 : x
  2. Step 2: Convert to fraction form
    5,428,643.76/8,143,245.90 = 1,385,166.96/x
  3. Step 3: Cross multiply
    5,428,643.76x = 8,143,245.90 × 1,385,166.96
  4. Step 4: Simplify right side
    5,428,643.76x = 11,279,755,167,835.46
  5. Step 5: Solve for x
    x = 11,279,755,167,835.46/5,428,643.76
  6. Step 6: Final answer
    x = 2,077,821.95

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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.