Home / 1,393,693.38-1,924,121.42-877,889.40

Finding the Fourth Proportional to 1,393,693.38, 1,924,121.42 and 877,889.40

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Solution

The fourth proportional to 1,393,693.38, 1,924,121.42 and 877,889.40 is: 1,212,006.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,693.38 : 1,924,121.42 = 877,889.40 : x
  2. Step 2: Convert to fraction form
    1,393,693.38/1,924,121.42 = 877,889.40/x
  3. Step 3: Cross multiply
    1,393,693.38x = 1,924,121.42 × 877,889.40
  4. Step 4: Simplify right side
    1,393,693.38x = 1,689,165,798,930.95
  5. Step 5: Solve for x
    x = 1,689,165,798,930.95/1,393,693.38
  6. Step 6: Final answer
    x = 1,212,006.76

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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.