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Finding the Fourth Proportional to 562,754.27, 776,528.51 and 321,022.40

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Solution

The fourth proportional to 562,754.27, 776,528.51 and 321,022.40 is: 442,969.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,754.27 : 776,528.51 = 321,022.40 : x
  2. Step 2: Convert to fraction form
    562,754.27/776,528.51 = 321,022.40/x
  3. Step 3: Cross multiply
    562,754.27x = 776,528.51 × 321,022.40
  4. Step 4: Simplify right side
    562,754.27x = 249,283,040,460.87
  5. Step 5: Solve for x
    x = 249,283,040,460.87/562,754.27
  6. Step 6: Final answer
    x = 442,969.61

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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.