Home / 1,219,079.17-1,828,739.05-420,255.55

Finding the Fourth Proportional to 1,219,079.17, 1,828,739.05 and 420,255.55

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Solution

The fourth proportional to 1,219,079.17, 1,828,739.05 and 420,255.55 is: 630,424.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,079.17 : 1,828,739.05 = 420,255.55 : x
  2. Step 2: Convert to fraction form
    1,219,079.17/1,828,739.05 = 420,255.55/x
  3. Step 3: Cross multiply
    1,219,079.17x = 1,828,739.05 × 420,255.55
  4. Step 4: Simplify right side
    1,219,079.17x = 768,537,736,499.51
  5. Step 5: Solve for x
    x = 768,537,736,499.51/1,219,079.17
  6. Step 6: Final answer
    x = 630,424.79

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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.