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Finding the Fourth Proportional to 562,967.20, 776,950.20 and 321,286.15

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Solution

The fourth proportional to 562,967.20, 776,950.20 and 321,286.15 is: 443,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,967.20 : 776,950.20 = 321,286.15 : x
  2. Step 2: Convert to fraction form
    562,967.20/776,950.20 = 321,286.15/x
  3. Step 3: Cross multiply
    562,967.20x = 776,950.20 × 321,286.15
  4. Step 4: Simplify right side
    562,967.20x = 249,623,333,008.55
  5. Step 5: Solve for x
    x = 249,623,333,008.55/562,967.20
  6. Step 6: Final answer
    x = 443,406.53

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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.