Home / 1,222,177.08-1,686,579-678,281.28

Finding the Fourth Proportional to 1,222,177.08, 1,686,579 and 678,281.28

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Solution

The fourth proportional to 1,222,177.08, 1,686,579 and 678,281.28 is: 936,014.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,177.08 : 1,686,579 = 678,281.28 : x
  2. Step 2: Convert to fraction form
    1,222,177.08/1,686,579 = 678,281.28/x
  3. Step 3: Cross multiply
    1,222,177.08x = 1,686,579 × 678,281.28
  4. Step 4: Simplify right side
    1,222,177.08x = 1,143,974,962,941.12
  5. Step 5: Solve for x
    x = 1,143,974,962,941.12/1,222,177.08
  6. Step 6: Final answer
    x = 936,014.09

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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.