Home / 879,300.80-1,318,951.20-520,049.60

Finding the Fourth Proportional to 879,300.80, 1,318,951.20 and 520,049.60

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Solution

The fourth proportional to 879,300.80, 1,318,951.20 and 520,049.60 is: 780,074.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,300.80 : 1,318,951.20 = 520,049.60 : x
  2. Step 2: Convert to fraction form
    879,300.80/1,318,951.20 = 520,049.60/x
  3. Step 3: Cross multiply
    879,300.80x = 1,318,951.20 × 520,049.60
  4. Step 4: Simplify right side
    879,300.80x = 685,920,043,979.52
  5. Step 5: Solve for x
    x = 685,920,043,979.52/879,300.80
  6. Step 6: Final answer
    x = 780,074.40

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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.