Home / 839,855.12-1,158,287.04-709,670.56

Finding the Fourth Proportional to 839,855.12, 1,158,287.04 and 709,670.56

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Solution

The fourth proportional to 839,855.12, 1,158,287.04 and 709,670.56 is: 978,742.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,855.12 : 1,158,287.04 = 709,670.56 : x
  2. Step 2: Convert to fraction form
    839,855.12/1,158,287.04 = 709,670.56/x
  3. Step 3: Cross multiply
    839,855.12x = 1,158,287.04 × 709,670.56
  4. Step 4: Simplify right side
    839,855.12x = 822,002,212,317.54
  5. Step 5: Solve for x
    x = 822,002,212,317.54/839,855.12
  6. Step 6: Final answer
    x = 978,742.87

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1.5x scale

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.