Home / 1,191,864.21-1,787,851.39-393,215.55

Finding the Fourth Proportional to 1,191,864.21, 1,787,851.39 and 393,215.55

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Solution

The fourth proportional to 1,191,864.21, 1,787,851.39 and 393,215.55 is: 589,841.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,864.21 : 1,787,851.39 = 393,215.55 : x
  2. Step 2: Convert to fraction form
    1,191,864.21/1,787,851.39 = 393,215.55/x
  3. Step 3: Cross multiply
    1,191,864.21x = 1,787,851.39 × 393,215.55
  4. Step 4: Simplify right side
    1,191,864.21x = 703,010,960,686.91
  5. Step 5: Solve for x
    x = 703,010,960,686.91/1,191,864.21
  6. Step 6: Final answer
    x = 589,841.49

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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.