Home / 1,319,692.30-1,978,736.55-520,052.20

Finding the Fourth Proportional to 1,319,692.30, 1,978,736.55 and 520,052.20

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Solution

The fourth proportional to 1,319,692.30, 1,978,736.55 and 520,052.20 is: 779,762.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,692.30 : 1,978,736.55 = 520,052.20 : x
  2. Step 2: Convert to fraction form
    1,319,692.30/1,978,736.55 = 520,052.20/x
  3. Step 3: Cross multiply
    1,319,692.30x = 1,978,736.55 × 520,052.20
  4. Step 4: Simplify right side
    1,319,692.30x = 1,029,046,296,047.91
  5. Step 5: Solve for x
    x = 1,029,046,296,047.91/1,319,692.30
  6. Step 6: Final answer
    x = 779,762.29

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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.