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Finding the Fourth Proportional to 562,968.28, 776,703.18 and 321,076.90

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Solution

The fourth proportional to 562,968.28, 776,703.18 and 321,076.90 is: 442,976.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,968.28 : 776,703.18 = 321,076.90 : x
  2. Step 2: Convert to fraction form
    562,968.28/776,703.18 = 321,076.90/x
  3. Step 3: Cross multiply
    562,968.28x = 776,703.18 × 321,076.90
  4. Step 4: Simplify right side
    562,968.28x = 249,381,449,254.54
  5. Step 5: Solve for x
    x = 249,381,449,254.54/562,968.28
  6. Step 6: Final answer
    x = 442,976.02

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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.