Home / 687,867,622.69-1,031,772,613.82-221,518,724.26

Finding the Fourth Proportional to 687,867,622.69, 1,031,772,613.82 and 221,518,724.26

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Solution

The fourth proportional to 687,867,622.69, 1,031,772,613.82 and 221,518,724.26 is: 332,268,805.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,867,622.69 : 1,031,772,613.82 = 221,518,724.26 : x
  2. Step 2: Convert to fraction form
    687,867,622.69/1,031,772,613.82 = 221,518,724.26/x
  3. Step 3: Cross multiply
    687,867,622.69x = 1,031,772,613.82 × 221,518,724.26
  4. Step 4: Simplify right side
    687,867,622.69x = 228,556,953,138,704,448
  5. Step 5: Solve for x
    x = 228,556,953,138,704,448/687,867,622.69
  6. Step 6: Final answer
    x = 332,268,805.22

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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.