Home / 1,019,400.58-1,529,285.19-420,028.30

Finding the Fourth Proportional to 1,019,400.58, 1,529,285.19 and 420,028.30

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Solution

The fourth proportional to 1,019,400.58, 1,529,285.19 and 420,028.30 is: 630,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,400.58 : 1,529,285.19 = 420,028.30 : x
  2. Step 2: Convert to fraction form
    1,019,400.58/1,529,285.19 = 420,028.30/x
  3. Step 3: Cross multiply
    1,019,400.58x = 1,529,285.19 × 420,028.30
  4. Step 4: Simplify right side
    1,019,400.58x = 642,343,058,570.88
  5. Step 5: Solve for x
    x = 642,343,058,570.88/1,019,400.58
  6. Step 6: Final answer
    x = 630,118.40

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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.