Home / 2,871,145.40-4,307,301.30-978,078.20

Finding the Fourth Proportional to 2,871,145.40, 4,307,301.30 and 978,078.20

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Solution

The fourth proportional to 2,871,145.40, 4,307,301.30 and 978,078.20 is: 1,467,315.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871,145.40 : 4,307,301.30 = 978,078.20 : x
  2. Step 2: Convert to fraction form
    2,871,145.40/4,307,301.30 = 978,078.20/x
  3. Step 3: Cross multiply
    2,871,145.40x = 4,307,301.30 × 978,078.20
  4. Step 4: Simplify right side
    2,871,145.40x = 4,212,877,502,361.66
  5. Step 5: Solve for x
    x = 4,212,877,502,361.66/2,871,145.40
  6. Step 6: Final answer
    x = 1,467,315.97

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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.