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Finding the Fourth Proportional to 626,534.56, 864,608.79 and 340,047.28

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Solution

The fourth proportional to 626,534.56, 864,608.79 and 340,047.28 is: 469,260.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,534.56 : 864,608.79 = 340,047.28 : x
  2. Step 2: Convert to fraction form
    626,534.56/864,608.79 = 340,047.28/x
  3. Step 3: Cross multiply
    626,534.56x = 864,608.79 × 340,047.28
  4. Step 4: Simplify right side
    626,534.56x = 294,007,867,303.59
  5. Step 5: Solve for x
    x = 294,007,867,303.59/626,534.56
  6. Step 6: Final answer
    x = 469,260.41

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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.