Home / 879,818.64-1,319,787.87-280,824.89

Finding the Fourth Proportional to 879,818.64, 1,319,787.87 and 280,824.89

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Solution

The fourth proportional to 879,818.64, 1,319,787.87 and 280,824.89 is: 421,256.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,818.64 : 1,319,787.87 = 280,824.89 : x
  2. Step 2: Convert to fraction form
    879,818.64/1,319,787.87 = 280,824.89/x
  3. Step 3: Cross multiply
    879,818.64x = 1,319,787.87 × 280,824.89
  4. Step 4: Simplify right side
    879,818.64x = 370,629,276,817.15
  5. Step 5: Solve for x
    x = 370,629,276,817.15/879,818.64
  6. Step 6: Final answer
    x = 421,256.45

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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.