Home / 860,621.38-1,187,699.57-478,639.96

Finding the Fourth Proportional to 860,621.38, 1,187,699.57 and 478,639.96

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Solution

The fourth proportional to 860,621.38, 1,187,699.57 and 478,639.96 is: 660,546.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,621.38 : 1,187,699.57 = 478,639.96 : x
  2. Step 2: Convert to fraction form
    860,621.38/1,187,699.57 = 478,639.96/x
  3. Step 3: Cross multiply
    860,621.38x = 1,187,699.57 × 478,639.96
  4. Step 4: Simplify right side
    860,621.38x = 568,480,474,676.82
  5. Step 5: Solve for x
    x = 568,480,474,676.82/860,621.38
  6. Step 6: Final answer
    x = 660,546.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.