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Finding the Fourth Proportional to 562,665.02, 776,540.14 and 321,007.20

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Solution

The fourth proportional to 562,665.02, 776,540.14 and 321,007.20 is: 443,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,665.02 : 776,540.14 = 321,007.20 : x
  2. Step 2: Convert to fraction form
    562,665.02/776,540.14 = 321,007.20/x
  3. Step 3: Cross multiply
    562,665.02x = 776,540.14 × 321,007.20
  4. Step 4: Simplify right side
    562,665.02x = 249,274,976,029.01
  5. Step 5: Solve for x
    x = 249,274,976,029.01/562,665.02
  6. Step 6: Final answer
    x = 443,025.54

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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.