Home / 879,840-1,319,731.92-280,837.62

Finding the Fourth Proportional to 879,840, 1,319,731.92 and 280,837.62

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Solution

The fourth proportional to 879,840, 1,319,731.92 and 280,837.62 is: 421,247.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,840 : 1,319,731.92 = 280,837.62 : x
  2. Step 2: Convert to fraction form
    879,840/1,319,731.92 = 280,837.62/x
  3. Step 3: Cross multiply
    879,840x = 1,319,731.92 × 280,837.62
  4. Step 4: Simplify right side
    879,840x = 370,630,371,450.83
  5. Step 5: Solve for x
    x = 370,630,371,450.83/879,840
  6. Step 6: Final answer
    x = 421,247.47

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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.