Home / 3,128,509.62-4,315,113-2,871,215.91

Finding the Fourth Proportional to 3,128,509.62, 4,315,113 and 2,871,215.91

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Solution

The fourth proportional to 3,128,509.62, 4,315,113 and 2,871,215.91 is: 3,960,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,509.62 : 4,315,113 = 2,871,215.91 : x
  2. Step 2: Convert to fraction form
    3,128,509.62/4,315,113 = 2,871,215.91/x
  3. Step 3: Cross multiply
    3,128,509.62x = 4,315,113 × 2,871,215.91
  4. Step 4: Simplify right side
    3,128,509.62x = 12,389,621,099,047.83
  5. Step 5: Solve for x
    x = 12,389,621,099,047.83/3,128,509.62
  6. Step 6: Final answer
    x = 3,960,231.10

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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.