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Finding the Fourth Proportional to 626,564.96, 864,636.48 and 340,078.90

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Solution

The fourth proportional to 626,564.96, 864,636.48 and 340,078.90 is: 469,296.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,564.96 : 864,636.48 = 340,078.90 : x
  2. Step 2: Convert to fraction form
    626,564.96/864,636.48 = 340,078.90/x
  3. Step 3: Cross multiply
    626,564.96x = 864,636.48 × 340,078.90
  4. Step 4: Simplify right side
    626,564.96x = 294,044,623,018.27
  5. Step 5: Solve for x
    x = 294,044,623,018.27/626,564.96
  6. Step 6: Final answer
    x = 469,296.31

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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.