Home / 1,019,398.08-1,529,281.44-420,025.80

Finding the Fourth Proportional to 1,019,398.08, 1,529,281.44 and 420,025.80

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Solution

The fourth proportional to 1,019,398.08, 1,529,281.44 and 420,025.80 is: 630,114.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,398.08 : 1,529,281.44 = 420,025.80 : x
  2. Step 2: Convert to fraction form
    1,019,398.08/1,529,281.44 = 420,025.80/x
  3. Step 3: Cross multiply
    1,019,398.08x = 1,529,281.44 × 420,025.80
  4. Step 4: Simplify right side
    1,019,398.08x = 642,337,660,261.15
  5. Step 5: Solve for x
    x = 642,337,660,261.15/1,019,398.08
  6. Step 6: Final answer
    x = 630,114.65

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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.