Home / 1,219,080.55-1,828,741.11-420,256.93

Finding the Fourth Proportional to 1,219,080.55, 1,828,741.11 and 420,256.93

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Solution

The fourth proportional to 1,219,080.55, 1,828,741.11 and 420,256.93 is: 630,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,080.55 : 1,828,741.11 = 420,256.93 : x
  2. Step 2: Convert to fraction form
    1,219,080.55/1,828,741.11 = 420,256.93/x
  3. Step 3: Cross multiply
    1,219,080.55x = 1,828,741.11 × 420,256.93
  4. Step 4: Simplify right side
    1,219,080.55x = 768,541,124,653.39
  5. Step 5: Solve for x
    x = 768,541,124,653.39/1,219,080.55
  6. Step 6: Final answer
    x = 630,426.86

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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.