Home / 1,191,312.90-1,787,190.72-392,650.56

Finding the Fourth Proportional to 1,191,312.90, 1,787,190.72 and 392,650.56

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Solution

The fourth proportional to 1,191,312.90, 1,787,190.72 and 392,650.56 is: 589,048.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,312.90 : 1,787,190.72 = 392,650.56 : x
  2. Step 2: Convert to fraction form
    1,191,312.90/1,787,190.72 = 392,650.56/x
  3. Step 3: Cross multiply
    1,191,312.90x = 1,787,190.72 × 392,650.56
  4. Step 4: Simplify right side
    1,191,312.90x = 701,741,437,034.80
  5. Step 5: Solve for x
    x = 701,741,437,034.80/1,191,312.90
  6. Step 6: Final answer
    x = 589,048.80

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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.