Home / 1,080,123.40-1,619,990.70-680,048.20

Finding the Fourth Proportional to 1,080,123.40, 1,619,990.70 and 680,048.20

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Solution

The fourth proportional to 1,080,123.40, 1,619,990.70 and 680,048.20 is: 1,019,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,123.40 : 1,619,990.70 = 680,048.20 : x
  2. Step 2: Convert to fraction form
    1,080,123.40/1,619,990.70 = 680,048.20/x
  3. Step 3: Cross multiply
    1,080,123.40x = 1,619,990.70 × 680,048.20
  4. Step 4: Simplify right side
    1,080,123.40x = 1,101,671,759,551.74
  5. Step 5: Solve for x
    x = 1,101,671,759,551.74/1,080,123.40
  6. Step 6: Final answer
    x = 1,019,949.91

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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.