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Finding the Fourth Proportional to 562,902.52, 776,879.22 and 321,129.40

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Solution

The fourth proportional to 562,902.52, 776,879.22 and 321,129.40 is: 443,200.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,902.52 : 776,879.22 = 321,129.40 : x
  2. Step 2: Convert to fraction form
    562,902.52/776,879.22 = 321,129.40/x
  3. Step 3: Cross multiply
    562,902.52x = 776,879.22 × 321,129.40
  4. Step 4: Simplify right side
    562,902.52x = 249,478,757,791.07
  5. Step 5: Solve for x
    x = 249,478,757,791.07/562,902.52
  6. Step 6: Final answer
    x = 443,200.64

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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.