Home / 1,219,983.80-1,829,975.70-905,055.80

Finding the Fourth Proportional to 1,219,983.80, 1,829,975.70 and 905,055.80

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Solution

The fourth proportional to 1,219,983.80, 1,829,975.70 and 905,055.80 is: 1,357,583.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,983.80 : 1,829,975.70 = 905,055.80 : x
  2. Step 2: Convert to fraction form
    1,219,983.80/1,829,975.70 = 905,055.80/x
  3. Step 3: Cross multiply
    1,219,983.80x = 1,829,975.70 × 905,055.80
  4. Step 4: Simplify right side
    1,219,983.80x = 1,656,230,121,144.06
  5. Step 5: Solve for x
    x = 1,656,230,121,144.06/1,219,983.80
  6. Step 6: Final answer
    x = 1,357,583.70

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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.