Home / 1,238,492.80-1,857,739.20-989,660.80

Finding the Fourth Proportional to 1,238,492.80, 1,857,739.20 and 989,660.80

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Solution

The fourth proportional to 1,238,492.80, 1,857,739.20 and 989,660.80 is: 1,484,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,492.80 : 1,857,739.20 = 989,660.80 : x
  2. Step 2: Convert to fraction form
    1,238,492.80/1,857,739.20 = 989,660.80/x
  3. Step 3: Cross multiply
    1,238,492.80x = 1,857,739.20 × 989,660.80
  4. Step 4: Simplify right side
    1,238,492.80x = 1,838,531,662,863.36
  5. Step 5: Solve for x
    x = 1,838,531,662,863.36/1,238,492.80
  6. Step 6: Final answer
    x = 1,484,491.20

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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.