Home / 839,857.12-1,158,289.80-709,672.56

Finding the Fourth Proportional to 839,857.12, 1,158,289.80 and 709,672.56

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Solution

The fourth proportional to 839,857.12, 1,158,289.80 and 709,672.56 is: 978,745.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,857.12 : 1,158,289.80 = 709,672.56 : x
  2. Step 2: Convert to fraction form
    839,857.12/1,158,289.80 = 709,672.56/x
  3. Step 3: Cross multiply
    839,857.12x = 1,158,289.80 × 709,672.56
  4. Step 4: Simplify right side
    839,857.12x = 822,006,487,587.89
  5. Step 5: Solve for x
    x = 822,006,487,587.89/839,857.12
  6. Step 6: Final answer
    x = 978,745.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.