Home / 1,229,664.72-1,696,938.75-678,367.92

Finding the Fourth Proportional to 1,229,664.72, 1,696,938.75 and 678,367.92

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Solution

The fourth proportional to 1,229,664.72, 1,696,938.75 and 678,367.92 is: 936,148.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,664.72 : 1,696,938.75 = 678,367.92 : x
  2. Step 2: Convert to fraction form
    1,229,664.72/1,696,938.75 = 678,367.92/x
  3. Step 3: Cross multiply
    1,229,664.72x = 1,696,938.75 × 678,367.92
  4. Step 4: Simplify right side
    1,229,664.72x = 1,151,148,810,204.90
  5. Step 5: Solve for x
    x = 1,151,148,810,204.90/1,229,664.72
  6. Step 6: Final answer
    x = 936,148.52

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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.