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Finding the Fourth Proportional to 680,008.80, 1,017,680.40 and 624,021.60

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Solution

The fourth proportional to 680,008.80, 1,017,680.40 and 624,021.60 is: 933,891.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,008.80 : 1,017,680.40 = 624,021.60 : x
  2. Step 2: Convert to fraction form
    680,008.80/1,017,680.40 = 624,021.60/x
  3. Step 3: Cross multiply
    680,008.80x = 1,017,680.40 × 624,021.60
  4. Step 4: Simplify right side
    680,008.80x = 635,054,551,496.64
  5. Step 5: Solve for x
    x = 635,054,551,496.64/680,008.80
  6. Step 6: Final answer
    x = 933,891.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.