Home / 1,319,009.90-1,978,126.05-520,025.90

Finding the Fourth Proportional to 1,319,009.90, 1,978,126.05 and 520,025.90

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Solution

The fourth proportional to 1,319,009.90, 1,978,126.05 and 520,025.90 is: 779,885.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,009.90 : 1,978,126.05 = 520,025.90 : x
  2. Step 2: Convert to fraction form
    1,319,009.90/1,978,126.05 = 520,025.90/x
  3. Step 3: Cross multiply
    1,319,009.90x = 1,978,126.05 × 520,025.90
  4. Step 4: Simplify right side
    1,319,009.90x = 1,028,676,779,464.70
  5. Step 5: Solve for x
    x = 1,028,676,779,464.70/1,319,009.90
  6. Step 6: Final answer
    x = 779,885.56

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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.