Home / 1,443,415.68-1,991,428.16-839,306.88

Finding the Fourth Proportional to 1,443,415.68, 1,991,428.16 and 839,306.88

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Solution

The fourth proportional to 1,443,415.68, 1,991,428.16 and 839,306.88 is: 1,157,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,415.68 : 1,991,428.16 = 839,306.88 : x
  2. Step 2: Convert to fraction form
    1,443,415.68/1,991,428.16 = 839,306.88/x
  3. Step 3: Cross multiply
    1,443,415.68x = 1,991,428.16 × 839,306.88
  4. Step 4: Simplify right side
    1,443,415.68x = 1,671,419,355,713.74
  5. Step 5: Solve for x
    x = 1,671,419,355,713.74/1,443,415.68
  6. Step 6: Final answer
    x = 1,157,961.20

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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.