Home / 1,221,014.76-1,685,106.93-711,706.20

Finding the Fourth Proportional to 1,221,014.76, 1,685,106.93 and 711,706.20

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Solution

The fourth proportional to 1,221,014.76, 1,685,106.93 and 711,706.20 is: 982,216.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,014.76 : 1,685,106.93 = 711,706.20 : x
  2. Step 2: Convert to fraction form
    1,221,014.76/1,685,106.93 = 711,706.20/x
  3. Step 3: Cross multiply
    1,221,014.76x = 1,685,106.93 × 711,706.20
  4. Step 4: Simplify right side
    1,221,014.76x = 1,199,301,049,743.97
  5. Step 5: Solve for x
    x = 1,199,301,049,743.97/1,221,014.76
  6. Step 6: Final answer
    x = 982,216.67

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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.