Home / 2,178,683.40-3,006,539.88-1,211,792.88

Finding the Fourth Proportional to 2,178,683.40, 3,006,539.88 and 1,211,792.88

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Solution

The fourth proportional to 2,178,683.40, 3,006,539.88 and 1,211,792.88 is: 1,672,250.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178,683.40 : 3,006,539.88 = 1,211,792.88 : x
  2. Step 2: Convert to fraction form
    2,178,683.40/3,006,539.88 = 1,211,792.88/x
  3. Step 3: Cross multiply
    2,178,683.40x = 3,006,539.88 × 1,211,792.88
  4. Step 4: Simplify right side
    2,178,683.40x = 3,643,303,620,020.05
  5. Step 5: Solve for x
    x = 3,643,303,620,020.05/2,178,683.40
  6. Step 6: Final answer
    x = 1,672,250.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.