Home / 1,191,310.89-1,787,187.72-392,648.55

Finding the Fourth Proportional to 1,191,310.89, 1,787,187.72 and 392,648.55

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Solution

The fourth proportional to 1,191,310.89, 1,787,187.72 and 392,648.55 is: 589,045.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,310.89 : 1,787,187.72 = 392,648.55 : x
  2. Step 2: Convert to fraction form
    1,191,310.89/1,787,187.72 = 392,648.55/x
  3. Step 3: Cross multiply
    1,191,310.89x = 1,787,187.72 × 392,648.55
  4. Step 4: Simplify right side
    1,191,310.89x = 701,736,666,835.81
  5. Step 5: Solve for x
    x = 701,736,666,835.81/1,191,310.89
  6. Step 6: Final answer
    x = 589,045.79

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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.