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Finding the Fourth Proportional to 562,964.45, 776,946.40 and 321,283.40

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Solution

The fourth proportional to 562,964.45, 776,946.40 and 321,283.40 is: 443,402.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,964.45 : 776,946.40 = 321,283.40 : x
  2. Step 2: Convert to fraction form
    562,964.45/776,946.40 = 321,283.40/x
  3. Step 3: Cross multiply
    562,964.45x = 776,946.40 × 321,283.40
  4. Step 4: Simplify right side
    562,964.45x = 249,619,976,321.82
  5. Step 5: Solve for x
    x = 249,619,976,321.82/562,964.45
  6. Step 6: Final answer
    x = 443,402.74

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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.