Home / 1,222,154.83-1,686,495.03-678,290.96

Finding the Fourth Proportional to 1,222,154.83, 1,686,495.03 and 678,290.96

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Solution

The fourth proportional to 1,222,154.83, 1,686,495.03 and 678,290.96 is: 935,997.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,154.83 : 1,686,495.03 = 678,290.96 : x
  2. Step 2: Convert to fraction form
    1,222,154.83/1,686,495.03 = 678,290.96/x
  3. Step 3: Cross multiply
    1,222,154.83x = 1,686,495.03 × 678,290.96
  4. Step 4: Simplify right side
    1,222,154.83x = 1,143,934,334,606.58
  5. Step 5: Solve for x
    x = 1,143,934,334,606.58/1,222,154.83
  6. Step 6: Final answer
    x = 935,997.88

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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.