Home / 1,219,080.31-1,828,740.74-420,256.69

Finding the Fourth Proportional to 1,219,080.31, 1,828,740.74 and 420,256.69

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Solution

The fourth proportional to 1,219,080.31, 1,828,740.74 and 420,256.69 is: 630,426.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,080.31 : 1,828,740.74 = 420,256.69 : x
  2. Step 2: Convert to fraction form
    1,219,080.31/1,828,740.74 = 420,256.69/x
  3. Step 3: Cross multiply
    1,219,080.31x = 1,828,740.74 × 420,256.69
  4. Step 4: Simplify right side
    1,219,080.31x = 768,540,523,587.42
  5. Step 5: Solve for x
    x = 768,540,523,587.42/1,219,080.31
  6. Step 6: Final answer
    x = 630,426.49

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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.