Home / 1,112,611.65-1,668,480.75-392,799.74

Finding the Fourth Proportional to 1,112,611.65, 1,668,480.75 and 392,799.74

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Solution

The fourth proportional to 1,112,611.65, 1,668,480.75 and 392,799.74 is: 589,045.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,611.65 : 1,668,480.75 = 392,799.74 : x
  2. Step 2: Convert to fraction form
    1,112,611.65/1,668,480.75 = 392,799.74/x
  3. Step 3: Cross multiply
    1,112,611.65x = 1,668,480.75 × 392,799.74
  4. Step 4: Simplify right side
    1,112,611.65x = 655,378,796,452.60
  5. Step 5: Solve for x
    x = 655,378,796,452.60/1,112,611.65
  6. Step 6: Final answer
    x = 589,045.42

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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.