Home / 1,222,296.61-1,686,743.90-678,400.49

Finding the Fourth Proportional to 1,222,296.61, 1,686,743.90 and 678,400.49

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Solution

The fourth proportional to 1,222,296.61, 1,686,743.90 and 678,400.49 is: 936,178.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,296.61 : 1,686,743.90 = 678,400.49 : x
  2. Step 2: Convert to fraction form
    1,222,296.61/1,686,743.90 = 678,400.49/x
  3. Step 3: Cross multiply
    1,222,296.61x = 1,686,743.90 × 678,400.49
  4. Step 4: Simplify right side
    1,222,296.61x = 1,144,287,888,264.51
  5. Step 5: Solve for x
    x = 1,144,287,888,264.51/1,222,296.61
  6. Step 6: Final answer
    x = 936,178.57

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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.