Home / 1,440,101.12-1,987,262.78-828,156.65

Finding the Fourth Proportional to 1,440,101.12, 1,987,262.78 and 828,156.65

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Solution

The fourth proportional to 1,440,101.12, 1,987,262.78 and 828,156.65 is: 1,142,812.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,101.12 : 1,987,262.78 = 828,156.65 : x
  2. Step 2: Convert to fraction form
    1,440,101.12/1,987,262.78 = 828,156.65/x
  3. Step 3: Cross multiply
    1,440,101.12x = 1,987,262.78 × 828,156.65
  4. Step 4: Simplify right side
    1,440,101.12x = 1,645,764,872,477.39
  5. Step 5: Solve for x
    x = 1,645,764,872,477.39/1,440,101.12
  6. Step 6: Final answer
    x = 1,142,812.03

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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.