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Finding the Fourth Proportional to 626,564.34, 864,635.63 and 340,078.32

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Solution

The fourth proportional to 626,564.34, 864,635.63 and 340,078.32 is: 469,295.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,564.34 : 864,635.63 = 340,078.32 : x
  2. Step 2: Convert to fraction form
    626,564.34/864,635.63 = 340,078.32/x
  3. Step 3: Cross multiply
    626,564.34x = 864,635.63 × 340,078.32
  4. Step 4: Simplify right side
    626,564.34x = 294,043,830,762.15
  5. Step 5: Solve for x
    x = 294,043,830,762.15/626,564.34
  6. Step 6: Final answer
    x = 469,295.51

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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.