Home / 811,422.80-1,214,801.40-718,110.80

Finding the Fourth Proportional to 811,422.80, 1,214,801.40 and 718,110.80

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Solution

The fourth proportional to 811,422.80, 1,214,801.40 and 718,110.80 is: 1,075,101.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,422.80 : 1,214,801.40 = 718,110.80 : x
  2. Step 2: Convert to fraction form
    811,422.80/1,214,801.40 = 718,110.80/x
  3. Step 3: Cross multiply
    811,422.80x = 1,214,801.40 × 718,110.80
  4. Step 4: Simplify right side
    811,422.80x = 872,362,005,195.12
  5. Step 5: Solve for x
    x = 872,362,005,195.12/811,422.80
  6. Step 6: Final answer
    x = 1,075,101.67

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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.