Home / 2,129,671.65-3,178,208.45-1,902,480.62

Finding the Fourth Proportional to 2,129,671.65, 3,178,208.45 and 1,902,480.62

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Solution

The fourth proportional to 2,129,671.65, 3,178,208.45 and 1,902,480.62 is: 2,839,160.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,671.65 : 3,178,208.45 = 1,902,480.62 : x
  2. Step 2: Convert to fraction form
    2,129,671.65/3,178,208.45 = 1,902,480.62/x
  3. Step 3: Cross multiply
    2,129,671.65x = 3,178,208.45 × 1,902,480.62
  4. Step 4: Simplify right side
    2,129,671.65x = 6,046,479,980,878.36
  5. Step 5: Solve for x
    x = 6,046,479,980,878.36/2,129,671.65
  6. Step 6: Final answer
    x = 2,839,160.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.