Home / 1,620,758.20-2,431,557.60-861,975.76

Finding the Fourth Proportional to 1,620,758.20, 2,431,557.60 and 861,975.76

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Solution

The fourth proportional to 1,620,758.20, 2,431,557.60 and 861,975.76 is: 1,293,187.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,758.20 : 2,431,557.60 = 861,975.76 : x
  2. Step 2: Convert to fraction form
    1,620,758.20/2,431,557.60 = 861,975.76/x
  3. Step 3: Cross multiply
    1,620,758.20x = 2,431,557.60 × 861,975.76
  4. Step 4: Simplify right side
    1,620,758.20x = 2,095,943,710,243.78
  5. Step 5: Solve for x
    x = 2,095,943,710,243.78/1,620,758.20
  6. Step 6: Final answer
    x = 1,293,187.17

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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.