Home / 1,318,985.40-1,978,089.30-520,001.40

Finding the Fourth Proportional to 1,318,985.40, 1,978,089.30 and 520,001.40

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Solution

The fourth proportional to 1,318,985.40, 1,978,089.30 and 520,001.40 is: 779,848.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,985.40 : 1,978,089.30 = 520,001.40 : x
  2. Step 2: Convert to fraction form
    1,318,985.40/1,978,089.30 = 520,001.40/x
  3. Step 3: Cross multiply
    1,318,985.40x = 1,978,089.30 × 520,001.40
  4. Step 4: Simplify right side
    1,318,985.40x = 1,028,609,205,325.02
  5. Step 5: Solve for x
    x = 1,028,609,205,325.02/1,318,985.40
  6. Step 6: Final answer
    x = 779,848.82

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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.