Home / 1,051,218.62-1,577,236.99-420,312.86

Finding the Fourth Proportional to 1,051,218.62, 1,577,236.99 and 420,312.86

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Solution

The fourth proportional to 1,051,218.62, 1,577,236.99 and 420,312.86 is: 630,632.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051,218.62 : 1,577,236.99 = 420,312.86 : x
  2. Step 2: Convert to fraction form
    1,051,218.62/1,577,236.99 = 420,312.86/x
  3. Step 3: Cross multiply
    1,051,218.62x = 1,577,236.99 × 420,312.86
  4. Step 4: Simplify right side
    1,051,218.62x = 662,932,990,164.69
  5. Step 5: Solve for x
    x = 662,932,990,164.69/1,051,218.62
  6. Step 6: Final answer
    x = 630,632.85

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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.