Home / 1,319,308.56-1,979,106.21-420,539.04

Finding the Fourth Proportional to 1,319,308.56, 1,979,106.21 and 420,539.04

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Solution

The fourth proportional to 1,319,308.56, 1,979,106.21 and 420,539.04 is: 630,854.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,308.56 : 1,979,106.21 = 420,539.04 : x
  2. Step 2: Convert to fraction form
    1,319,308.56/1,979,106.21 = 420,539.04/x
  3. Step 3: Cross multiply
    1,319,308.56x = 1,979,106.21 × 420,539.04
  4. Step 4: Simplify right side
    1,319,308.56x = 832,291,425,611.44
  5. Step 5: Solve for x
    x = 832,291,425,611.44/1,319,308.56
  6. Step 6: Final answer
    x = 630,854.26

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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.