Home / 707,611.20-1,059,861.60-426,638.40

Finding the Fourth Proportional to 707,611.20, 1,059,861.60 and 426,638.40

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Solution

The fourth proportional to 707,611.20, 1,059,861.60 and 426,638.40 is: 639,019.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,611.20 : 1,059,861.60 = 426,638.40 : x
  2. Step 2: Convert to fraction form
    707,611.20/1,059,861.60 = 426,638.40/x
  3. Step 3: Cross multiply
    707,611.20x = 1,059,861.60 × 426,638.40
  4. Step 4: Simplify right side
    707,611.20x = 452,177,657,245.44
  5. Step 5: Solve for x
    x = 452,177,657,245.44/707,611.20
  6. Step 6: Final answer
    x = 639,019.93

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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.