Home / 1,318,542.16-1,978,111.50-420,035.08

Finding the Fourth Proportional to 1,318,542.16, 1,978,111.50 and 420,035.08

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Solution

The fourth proportional to 1,318,542.16, 1,978,111.50 and 420,035.08 is: 630,147.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,542.16 : 1,978,111.50 = 420,035.08 : x
  2. Step 2: Convert to fraction form
    1,318,542.16/1,978,111.50 = 420,035.08/x
  3. Step 3: Cross multiply
    1,318,542.16x = 1,978,111.50 × 420,035.08
  4. Step 4: Simplify right side
    1,318,542.16x = 830,876,222,151.42
  5. Step 5: Solve for x
    x = 830,876,222,151.42/1,318,542.16
  6. Step 6: Final answer
    x = 630,147.63

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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.