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Finding the Fourth Proportional to 562,960.51, 776,940.96 and 321,279.46

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Solution

The fourth proportional to 562,960.51, 776,940.96 and 321,279.46 is: 443,397.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,960.51 : 776,940.96 = 321,279.46 : x
  2. Step 2: Convert to fraction form
    562,960.51/776,940.96 = 321,279.46/x
  3. Step 3: Cross multiply
    562,960.51x = 776,940.96 × 321,279.46
  4. Step 4: Simplify right side
    562,960.51x = 249,615,171,343.13
  5. Step 5: Solve for x
    x = 249,615,171,343.13/562,960.51
  6. Step 6: Final answer
    x = 443,397.30

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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.