Home / 687,795.20-1,031,692.80-683,858.60

Finding the Fourth Proportional to 687,795.20, 1,031,692.80 and 683,858.60

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Solution

The fourth proportional to 687,795.20, 1,031,692.80 and 683,858.60 is: 1,025,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,795.20 : 1,031,692.80 = 683,858.60 : x
  2. Step 2: Convert to fraction form
    687,795.20/1,031,692.80 = 683,858.60/x
  3. Step 3: Cross multiply
    687,795.20x = 1,031,692.80 × 683,858.60
  4. Step 4: Simplify right side
    687,795.20x = 705,531,993,838.08
  5. Step 5: Solve for x
    x = 705,531,993,838.08/687,795.20
  6. Step 6: Final answer
    x = 1,025,787.90

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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.