Home / 890,745.20-1,336,117.80-678,168.80

Finding the Fourth Proportional to 890,745.20, 1,336,117.80 and 678,168.80

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Solution

The fourth proportional to 890,745.20, 1,336,117.80 and 678,168.80 is: 1,017,253.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,745.20 : 1,336,117.80 = 678,168.80 : x
  2. Step 2: Convert to fraction form
    890,745.20/1,336,117.80 = 678,168.80/x
  3. Step 3: Cross multiply
    890,745.20x = 1,336,117.80 × 678,168.80
  4. Step 4: Simplify right side
    890,745.20x = 906,113,405,084.64
  5. Step 5: Solve for x
    x = 906,113,405,084.64/890,745.20
  6. Step 6: Final answer
    x = 1,017,253.20

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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.