Home / 687,867,622.81-1,031,772,614.00-221,518,724.39

Finding the Fourth Proportional to 687,867,622.81, 1,031,772,614.00 and 221,518,724.39

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Solution

The fourth proportional to 687,867,622.81, 1,031,772,614.00 and 221,518,724.39 is: 332,268,805.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,867,622.81 : 1,031,772,614.00 = 221,518,724.39 : x
  2. Step 2: Convert to fraction form
    687,867,622.81/1,031,772,614.00 = 221,518,724.39/x
  3. Step 3: Cross multiply
    687,867,622.81x = 1,031,772,614.00 × 221,518,724.39
  4. Step 4: Simplify right side
    687,867,622.81x = 228,556,953,311,790,208
  5. Step 5: Solve for x
    x = 228,556,953,311,790,208/687,867,622.81
  6. Step 6: Final answer
    x = 332,268,805.41

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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.