Home / 1,356,149.39-1,871,349.87-812,271.20

Finding the Fourth Proportional to 1,356,149.39, 1,871,349.87 and 812,271.20

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Solution

The fourth proportional to 1,356,149.39, 1,871,349.87 and 812,271.20 is: 1,120,852.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356,149.39 : 1,871,349.87 = 812,271.20 : x
  2. Step 2: Convert to fraction form
    1,356,149.39/1,871,349.87 = 812,271.20/x
  3. Step 3: Cross multiply
    1,356,149.39x = 1,871,349.87 × 812,271.20
  4. Step 4: Simplify right side
    1,356,149.39x = 1,520,043,595,167.99
  5. Step 5: Solve for x
    x = 1,520,043,595,167.99/1,356,149.39
  6. Step 6: Final answer
    x = 1,120,852.62

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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.