Home / 1,019,601.90-1,529,278.21-420,485.21

Finding the Fourth Proportional to 1,019,601.90, 1,529,278.21 and 420,485.21

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Solution

The fourth proportional to 1,019,601.90, 1,529,278.21 and 420,485.21 is: 630,676.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,601.90 : 1,529,278.21 = 420,485.21 : x
  2. Step 2: Convert to fraction form
    1,019,601.90/1,529,278.21 = 420,485.21/x
  3. Step 3: Cross multiply
    1,019,601.90x = 1,529,278.21 × 420,485.21
  4. Step 4: Simplify right side
    1,019,601.90x = 643,038,865,676.85
  5. Step 5: Solve for x
    x = 643,038,865,676.85/1,019,601.90
  6. Step 6: Final answer
    x = 630,676.41

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Double scale
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1.5x scale

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.