Home / 823,516.80-1,235,275.20-815,643.60

Finding the Fourth Proportional to 823,516.80, 1,235,275.20 and 815,643.60

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Solution

The fourth proportional to 823,516.80, 1,235,275.20 and 815,643.60 is: 1,223,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,516.80 : 1,235,275.20 = 815,643.60 : x
  2. Step 2: Convert to fraction form
    823,516.80/1,235,275.20 = 815,643.60/x
  3. Step 3: Cross multiply
    823,516.80x = 1,235,275.20 × 815,643.60
  4. Step 4: Simplify right side
    823,516.80x = 1,007,544,311,118.72
  5. Step 5: Solve for x
    x = 1,007,544,311,118.72/823,516.80
  6. Step 6: Final answer
    x = 1,223,465.40

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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.