Home / 1,286,940.30-1,930,410.45-815,714.70

Finding the Fourth Proportional to 1,286,940.30, 1,930,410.45 and 815,714.70

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Solution

The fourth proportional to 1,286,940.30, 1,930,410.45 and 815,714.70 is: 1,223,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,940.30 : 1,930,410.45 = 815,714.70 : x
  2. Step 2: Convert to fraction form
    1,286,940.30/1,930,410.45 = 815,714.70/x
  3. Step 3: Cross multiply
    1,286,940.30x = 1,930,410.45 × 815,714.70
  4. Step 4: Simplify right side
    1,286,940.30x = 1,574,664,181,098.62
  5. Step 5: Solve for x
    x = 1,574,664,181,098.62/1,286,940.30
  6. Step 6: Final answer
    x = 1,223,572.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.