Home / 1,019,394.06-1,529,275.44-420,021.78

Finding the Fourth Proportional to 1,019,394.06, 1,529,275.44 and 420,021.78

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Solution

The fourth proportional to 1,019,394.06, 1,529,275.44 and 420,021.78 is: 630,108.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,394.06 : 1,529,275.44 = 420,021.78 : x
  2. Step 2: Convert to fraction form
    1,019,394.06/1,529,275.44 = 420,021.78/x
  3. Step 3: Cross multiply
    1,019,394.06x = 1,529,275.44 × 420,021.78
  4. Step 4: Simplify right side
    1,019,394.06x = 642,328,992,419.08
  5. Step 5: Solve for x
    x = 642,328,992,419.08/1,019,394.06
  6. Step 6: Final answer
    x = 630,108.63

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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.