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Finding the Fourth Proportional to 626,421.22, 864,461.84 and 339,941.31

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Solution

The fourth proportional to 626,421.22, 864,461.84 and 339,941.31 is: 469,119.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,421.22 : 864,461.84 = 339,941.31 : x
  2. Step 2: Convert to fraction form
    626,421.22/864,461.84 = 339,941.31/x
  3. Step 3: Cross multiply
    626,421.22x = 864,461.84 × 339,941.31
  4. Step 4: Simplify right side
    626,421.22x = 293,866,290,334.61
  5. Step 5: Solve for x
    x = 293,866,290,334.61/626,421.22
  6. Step 6: Final answer
    x = 469,119.31

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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.