Home / 1,319,276.80-1,978,051.20-520,076.80

Finding the Fourth Proportional to 1,319,276.80, 1,978,051.20 and 520,076.80

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Solution

The fourth proportional to 1,319,276.80, 1,978,051.20 and 520,076.80 is: 779,774.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,276.80 : 1,978,051.20 = 520,076.80 : x
  2. Step 2: Convert to fraction form
    1,319,276.80/1,978,051.20 = 520,076.80/x
  3. Step 3: Cross multiply
    1,319,276.80x = 1,978,051.20 × 520,076.80
  4. Step 4: Simplify right side
    1,319,276.80x = 1,028,738,538,332.16
  5. Step 5: Solve for x
    x = 1,028,738,538,332.16/1,319,276.80
  6. Step 6: Final answer
    x = 779,774.60

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