Home / 1,119,515.21-1,678,278.57-436,243.86

Finding the Fourth Proportional to 1,119,515.21, 1,678,278.57 and 436,243.86

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Solution

The fourth proportional to 1,119,515.21, 1,678,278.57 and 436,243.86 is: 653,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,515.21 : 1,678,278.57 = 436,243.86 : x
  2. Step 2: Convert to fraction form
    1,119,515.21/1,678,278.57 = 436,243.86/x
  3. Step 3: Cross multiply
    1,119,515.21x = 1,678,278.57 × 436,243.86
  4. Step 4: Simplify right side
    1,119,515.21x = 732,138,721,532.08
  5. Step 5: Solve for x
    x = 732,138,721,532.08/1,119,515.21
  6. Step 6: Final answer
    x = 653,978.36

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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.