Home / 3,111,212.75-4,293,476.48-1,680,428.75

Finding the Fourth Proportional to 3,111,212.75, 4,293,476.48 and 1,680,428.75

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Solution

The fourth proportional to 3,111,212.75, 4,293,476.48 and 1,680,428.75 is: 2,318,993.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111,212.75 : 4,293,476.48 = 1,680,428.75 : x
  2. Step 2: Convert to fraction form
    3,111,212.75/4,293,476.48 = 1,680,428.75/x
  3. Step 3: Cross multiply
    3,111,212.75x = 4,293,476.48 × 1,680,428.75
  4. Step 4: Simplify right side
    3,111,212.75x = 7,214,881,314,440.80
  5. Step 5: Solve for x
    x = 7,214,881,314,440.80/3,111,212.75
  6. Step 6: Final answer
    x = 2,318,993.23

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1.5x scale

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.