Home / 879,653.32-1,319,583.86-280,404.38

Finding the Fourth Proportional to 879,653.32, 1,319,583.86 and 280,404.38

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Solution

The fourth proportional to 879,653.32, 1,319,583.86 and 280,404.38 is: 420,639.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,653.32 : 1,319,583.86 = 280,404.38 : x
  2. Step 2: Convert to fraction form
    879,653.32/1,319,583.86 = 280,404.38/x
  3. Step 3: Cross multiply
    879,653.32x = 1,319,583.86 × 280,404.38
  4. Step 4: Simplify right side
    879,653.32x = 370,017,097,069.76
  5. Step 5: Solve for x
    x = 370,017,097,069.76/879,653.32
  6. Step 6: Final answer
    x = 420,639.69

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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.