Home / 1,318,830.16-1,978,223.76-420,259.76

Finding the Fourth Proportional to 1,318,830.16, 1,978,223.76 and 420,259.76

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Solution

The fourth proportional to 1,318,830.16, 1,978,223.76 and 420,259.76 is: 630,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,830.16 : 1,978,223.76 = 420,259.76 : x
  2. Step 2: Convert to fraction form
    1,318,830.16/1,978,223.76 = 420,259.76/x
  3. Step 3: Cross multiply
    1,318,830.16x = 1,978,223.76 × 420,259.76
  4. Step 4: Simplify right side
    1,318,830.16x = 831,367,842,603.90
  5. Step 5: Solve for x
    x = 831,367,842,603.90/1,318,830.16
  6. Step 6: Final answer
    x = 630,382.80

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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.