Home / 911,010.60-1,366,515.90-311,918.40

Finding the Fourth Proportional to 911,010.60, 1,366,515.90 and 311,918.40

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Solution

The fourth proportional to 911,010.60, 1,366,515.90 and 311,918.40 is: 467,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,010.60 : 1,366,515.90 = 311,918.40 : x
  2. Step 2: Convert to fraction form
    911,010.60/1,366,515.90 = 311,918.40/x
  3. Step 3: Cross multiply
    911,010.60x = 1,366,515.90 × 311,918.40
  4. Step 4: Simplify right side
    911,010.60x = 426,241,453,102.56
  5. Step 5: Solve for x
    x = 426,241,453,102.56/911,010.60
  6. Step 6: Final answer
    x = 467,877.60

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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.