Home / 823,421.80-1,235,132.70-815,548.60

Finding the Fourth Proportional to 823,421.80, 1,235,132.70 and 815,548.60

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Solution

The fourth proportional to 823,421.80, 1,235,132.70 and 815,548.60 is: 1,223,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,421.80 : 1,235,132.70 = 815,548.60 : x
  2. Step 2: Convert to fraction form
    823,421.80/1,235,132.70 = 815,548.60/x
  3. Step 3: Cross multiply
    823,421.80x = 1,235,132.70 × 815,548.60
  4. Step 4: Simplify right side
    823,421.80x = 1,007,310,744,299.22
  5. Step 5: Solve for x
    x = 1,007,310,744,299.22/823,421.80
  6. Step 6: Final answer
    x = 1,223,322.90

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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.