Home / 879,190.40-1,318,771.20-280,143.48

Finding the Fourth Proportional to 879,190.40, 1,318,771.20 and 280,143.48

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Solution

The fourth proportional to 879,190.40, 1,318,771.20 and 280,143.48 is: 420,210.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,190.40 : 1,318,771.20 = 280,143.48 : x
  2. Step 2: Convert to fraction form
    879,190.40/1,318,771.20 = 280,143.48/x
  3. Step 3: Cross multiply
    879,190.40x = 1,318,771.20 × 280,143.48
  4. Step 4: Simplify right side
    879,190.40x = 369,445,153,291.78
  5. Step 5: Solve for x
    x = 369,445,153,291.78/879,190.40
  6. Step 6: Final answer
    x = 420,210.63

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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.