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Finding the Fourth Proportional to 626,564.70, 864,660.96 and 340,084.80

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Solution

The fourth proportional to 626,564.70, 864,660.96 and 340,084.80 is: 469,317.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,564.70 : 864,660.96 = 340,084.80 : x
  2. Step 2: Convert to fraction form
    626,564.70/864,660.96 = 340,084.80/x
  3. Step 3: Cross multiply
    626,564.70x = 864,660.96 × 340,084.80
  4. Step 4: Simplify right side
    626,564.70x = 294,058,049,649.41
  5. Step 5: Solve for x
    x = 294,058,049,649.41/626,564.70
  6. Step 6: Final answer
    x = 469,317.93

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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.