Home / 879,703.44-1,318,909.20-280,319.76

Finding the Fourth Proportional to 879,703.44, 1,318,909.20 and 280,319.76

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Solution

The fourth proportional to 879,703.44, 1,318,909.20 and 280,319.76 is: 420,273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,703.44 : 1,318,909.20 = 280,319.76 : x
  2. Step 2: Convert to fraction form
    879,703.44/1,318,909.20 = 280,319.76/x
  3. Step 3: Cross multiply
    879,703.44x = 1,318,909.20 × 280,319.76
  4. Step 4: Simplify right side
    879,703.44x = 369,716,310,405.79
  5. Step 5: Solve for x
    x = 369,716,310,405.79/879,703.44
  6. Step 6: Final answer
    x = 420,273.80

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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.