Home / 1,356,154.80-1,871,357.29-812,276.61

Finding the Fourth Proportional to 1,356,154.80, 1,871,357.29 and 812,276.61

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Solution

The fourth proportional to 1,356,154.80, 1,871,357.29 and 812,276.61 is: 1,120,860.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356,154.80 : 1,871,357.29 = 812,276.61 : x
  2. Step 2: Convert to fraction form
    1,356,154.80/1,871,357.29 = 812,276.61/x
  3. Step 3: Cross multiply
    1,356,154.80x = 1,871,357.29 × 812,276.61
  4. Step 4: Simplify right side
    1,356,154.80x = 1,520,059,755,619.99
  5. Step 5: Solve for x
    x = 1,520,059,755,619.99/1,356,154.80
  6. Step 6: Final answer
    x = 1,120,860.06

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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.