Home / 5,428,914.75-8,143,366.86-1,385,402.58

Finding the Fourth Proportional to 5,428,914.75, 8,143,366.86 and 1,385,402.58

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Solution

The fourth proportional to 5,428,914.75, 8,143,366.86 and 1,385,402.58 is: 2,078,102.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428,914.75 : 8,143,366.86 = 1,385,402.58 : x
  2. Step 2: Convert to fraction form
    5,428,914.75/8,143,366.86 = 1,385,402.58/x
  3. Step 3: Cross multiply
    5,428,914.75x = 8,143,366.86 × 1,385,402.58
  4. Step 4: Simplify right side
    5,428,914.75x = 11,281,841,457,730.50
  5. Step 5: Solve for x
    x = 11,281,841,457,730.50/5,428,914.75
  6. Step 6: Final answer
    x = 2,078,102.53

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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.