Home / 926,918.40-1,389,211.20-821,942.40

Finding the Fourth Proportional to 926,918.40, 1,389,211.20 and 821,942.40

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Solution

The fourth proportional to 926,918.40, 1,389,211.20 and 821,942.40 is: 1,231,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,918.40 : 1,389,211.20 = 821,942.40 : x
  2. Step 2: Convert to fraction form
    926,918.40/1,389,211.20 = 821,942.40/x
  3. Step 3: Cross multiply
    926,918.40x = 1,389,211.20 × 821,942.40
  4. Step 4: Simplify right side
    926,918.40x = 1,141,851,587,834.88
  5. Step 5: Solve for x
    x = 1,141,851,587,834.88/926,918.40
  6. Step 6: Final answer
    x = 1,231,879.30

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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.