Home / 1,238,890.40-1,857,080.40-839,571.20

Finding the Fourth Proportional to 1,238,890.40, 1,857,080.40 and 839,571.20

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Solution

The fourth proportional to 1,238,890.40, 1,857,080.40 and 839,571.20 is: 1,258,506.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,890.40 : 1,857,080.40 = 839,571.20 : x
  2. Step 2: Convert to fraction form
    1,238,890.40/1,857,080.40 = 839,571.20/x
  3. Step 3: Cross multiply
    1,238,890.40x = 1,857,080.40 × 839,571.20
  4. Step 4: Simplify right side
    1,238,890.40x = 1,559,151,219,924.48
  5. Step 5: Solve for x
    x = 1,559,151,219,924.48/1,238,890.40
  6. Step 6: Final answer
    x = 1,258,506.18

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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.