Home / 721,806.80-1,082,807.40-248,637.20

Finding the Fourth Proportional to 721,806.80, 1,082,807.40 and 248,637.20

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Solution

The fourth proportional to 721,806.80, 1,082,807.40 and 248,637.20 is: 372,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,806.80 : 1,082,807.40 = 248,637.20 : x
  2. Step 2: Convert to fraction form
    721,806.80/1,082,807.40 = 248,637.20/x
  3. Step 3: Cross multiply
    721,806.80x = 1,082,807.40 × 248,637.20
  4. Step 4: Simplify right side
    721,806.80x = 269,226,200,075.28
  5. Step 5: Solve for x
    x = 269,226,200,075.28/721,806.80
  6. Step 6: Final answer
    x = 372,989.28

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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.