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Finding the Fourth Proportional to 626,420.37, 864,460.67 and 339,940.46

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Solution

The fourth proportional to 626,420.37, 864,460.67 and 339,940.46 is: 469,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,420.37 : 864,460.67 = 339,940.46 : x
  2. Step 2: Convert to fraction form
    626,420.37/864,460.67 = 339,940.46/x
  3. Step 3: Cross multiply
    626,420.37x = 864,460.67 × 339,940.46
  4. Step 4: Simplify right side
    626,420.37x = 293,865,157,811.71
  5. Step 5: Solve for x
    x = 293,865,157,811.71/626,420.37
  6. Step 6: Final answer
    x = 469,118.14

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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.