Home / 879,579.80-1,319,345.40-280,576.70

Finding the Fourth Proportional to 879,579.80, 1,319,345.40 and 280,576.70

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Solution

The fourth proportional to 879,579.80, 1,319,345.40 and 280,576.70 is: 420,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,579.80 : 1,319,345.40 = 280,576.70 : x
  2. Step 2: Convert to fraction form
    879,579.80/1,319,345.40 = 280,576.70/x
  3. Step 3: Cross multiply
    879,579.80x = 1,319,345.40 × 280,576.70
  4. Step 4: Simplify right side
    879,579.80x = 370,177,578,492.18
  5. Step 5: Solve for x
    x = 370,177,578,492.18/879,579.80
  6. Step 6: Final answer
    x = 420,857.30

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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.