Home / 839,986.80-1,259,980.20-524,621.40

Finding the Fourth Proportional to 839,986.80, 1,259,980.20 and 524,621.40

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Solution

The fourth proportional to 839,986.80, 1,259,980.20 and 524,621.40 is: 786,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,986.80 : 1,259,980.20 = 524,621.40 : x
  2. Step 2: Convert to fraction form
    839,986.80/1,259,980.20 = 524,621.40/x
  3. Step 3: Cross multiply
    839,986.80x = 1,259,980.20 × 524,621.40
  4. Step 4: Simplify right side
    839,986.80x = 661,012,576,496.28
  5. Step 5: Solve for x
    x = 661,012,576,496.28/839,986.80
  6. Step 6: Final answer
    x = 786,932.10

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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.