Home / 775,978.27-1,163,628.07-391,490.58

Finding the Fourth Proportional to 775,978.27, 1,163,628.07 and 391,490.58

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Solution

The fourth proportional to 775,978.27, 1,163,628.07 and 391,490.58 is: 587,064.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,978.27 : 1,163,628.07 = 391,490.58 : x
  2. Step 2: Convert to fraction form
    775,978.27/1,163,628.07 = 391,490.58/x
  3. Step 3: Cross multiply
    775,978.27x = 1,163,628.07 × 391,490.58
  4. Step 4: Simplify right side
    775,978.27x = 455,549,427,049.85
  5. Step 5: Solve for x
    x = 455,549,427,049.85/775,978.27
  6. Step 6: Final answer
    x = 587,064.67

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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.