Home / 890,630.60-1,335,945.90-859,137.80

Finding the Fourth Proportional to 890,630.60, 1,335,945.90 and 859,137.80

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Solution

The fourth proportional to 890,630.60, 1,335,945.90 and 859,137.80 is: 1,288,706.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,630.60 : 1,335,945.90 = 859,137.80 : x
  2. Step 2: Convert to fraction form
    890,630.60/1,335,945.90 = 859,137.80/x
  3. Step 3: Cross multiply
    890,630.60x = 1,335,945.90 × 859,137.80
  4. Step 4: Simplify right side
    890,630.60x = 1,147,761,621,445.02
  5. Step 5: Solve for x
    x = 1,147,761,621,445.02/890,630.60
  6. Step 6: Final answer
    x = 1,288,706.70

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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.