Home / 823,511.80-1,235,267.70-815,638.60

Finding the Fourth Proportional to 823,511.80, 1,235,267.70 and 815,638.60

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Solution

The fourth proportional to 823,511.80, 1,235,267.70 and 815,638.60 is: 1,223,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,511.80 : 1,235,267.70 = 815,638.60 : x
  2. Step 2: Convert to fraction form
    823,511.80/1,235,267.70 = 815,638.60/x
  3. Step 3: Cross multiply
    823,511.80x = 1,235,267.70 × 815,638.60
  4. Step 4: Simplify right side
    823,511.80x = 1,007,532,017,453.22
  5. Step 5: Solve for x
    x = 1,007,532,017,453.22/823,511.80
  6. Step 6: Final answer
    x = 1,223,457.90

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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.