Home / 2,130,244.11-2,939,756.90-1,212,428.25

Finding the Fourth Proportional to 2,130,244.11, 2,939,756.90 and 1,212,428.25

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Solution

The fourth proportional to 2,130,244.11, 2,939,756.90 and 1,212,428.25 is: 1,673,162.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130,244.11 : 2,939,756.90 = 1,212,428.25 : x
  2. Step 2: Convert to fraction form
    2,130,244.11/2,939,756.90 = 1,212,428.25/x
  3. Step 3: Cross multiply
    2,130,244.11x = 2,939,756.90 × 1,212,428.25
  4. Step 4: Simplify right side
    2,130,244.11x = 3,564,244,307,630.28
  5. Step 5: Solve for x
    x = 3,564,244,307,630.28/2,130,244.11
  6. Step 6: Final answer
    x = 1,673,162.38

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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.