Home / 626,385.40-864,414.18-339,905.54

Finding the Fourth Proportional to 626,385.40, 864,414.18 and 339,905.54

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Solution

The fourth proportional to 626,385.40, 864,414.18 and 339,905.54 is: 469,070.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,385.40 : 864,414.18 = 339,905.54 : x
  2. Step 2: Convert to fraction form
    626,385.40/864,414.18 = 339,905.54/x
  3. Step 3: Cross multiply
    626,385.40x = 864,414.18 × 339,905.54
  4. Step 4: Simplify right side
    626,385.40x = 293,819,168,636.56
  5. Step 5: Solve for x
    x = 293,819,168,636.56/626,385.40
  6. Step 6: Final answer
    x = 469,070.91

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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.