Home / 1,189,814.75-1,784,051.44-390,881.78

Finding the Fourth Proportional to 1,189,814.75, 1,784,051.44 and 390,881.78

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Solution

The fourth proportional to 1,189,814.75, 1,784,051.44 and 390,881.78 is: 586,102.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,814.75 : 1,784,051.44 = 390,881.78 : x
  2. Step 2: Convert to fraction form
    1,189,814.75/1,784,051.44 = 390,881.78/x
  3. Step 3: Cross multiply
    1,189,814.75x = 1,784,051.44 × 390,881.78
  4. Step 4: Simplify right side
    1,189,814.75x = 697,353,192,581.30
  5. Step 5: Solve for x
    x = 697,353,192,581.30/1,189,814.75
  6. Step 6: Final answer
    x = 586,102.33

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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.