Home / 1,222,561.78-1,687,050.63-678,654.58

Finding the Fourth Proportional to 1,222,561.78, 1,687,050.63 and 678,654.58

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Solution

The fourth proportional to 1,222,561.78, 1,687,050.63 and 678,654.58 is: 936,496.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,561.78 : 1,687,050.63 = 678,654.58 : x
  2. Step 2: Convert to fraction form
    1,222,561.78/1,687,050.63 = 678,654.58/x
  3. Step 3: Cross multiply
    1,222,561.78x = 1,687,050.63 × 678,654.58
  4. Step 4: Simplify right side
    1,222,561.78x = 1,144,924,636,741.39
  5. Step 5: Solve for x
    x = 1,144,924,636,741.39/1,222,561.78
  6. Step 6: Final answer
    x = 936,496.34

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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.