Home / 699,138.48-1,048,043.28-445,707.72

Finding the Fourth Proportional to 699,138.48, 1,048,043.28 and 445,707.72

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Solution

The fourth proportional to 699,138.48, 1,048,043.28 and 445,707.72 is: 668,137.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,138.48 : 1,048,043.28 = 445,707.72 : x
  2. Step 2: Convert to fraction form
    699,138.48/1,048,043.28 = 445,707.72/x
  3. Step 3: Cross multiply
    699,138.48x = 1,048,043.28 × 445,707.72
  4. Step 4: Simplify right side
    699,138.48x = 467,120,980,790.12
  5. Step 5: Solve for x
    x = 467,120,980,790.12/699,138.48
  6. Step 6: Final answer
    x = 668,137.99

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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.