Home / 669,628.80-1,004,443.20-389,692.80

Finding the Fourth Proportional to 669,628.80, 1,004,443.20 and 389,692.80

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Solution

The fourth proportional to 669,628.80, 1,004,443.20 and 389,692.80 is: 584,539.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,628.80 : 1,004,443.20 = 389,692.80 : x
  2. Step 2: Convert to fraction form
    669,628.80/1,004,443.20 = 389,692.80/x
  3. Step 3: Cross multiply
    669,628.80x = 1,004,443.20 × 389,692.80
  4. Step 4: Simplify right side
    669,628.80x = 391,424,283,048.96
  5. Step 5: Solve for x
    x = 391,424,283,048.96/669,628.80
  6. Step 6: Final answer
    x = 584,539.20

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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.