Home / 1,319,290.20-1,978,935.30-432,826.20

Finding the Fourth Proportional to 1,319,290.20, 1,978,935.30 and 432,826.20

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Solution

The fourth proportional to 1,319,290.20, 1,978,935.30 and 432,826.20 is: 649,239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,290.20 : 1,978,935.30 = 432,826.20 : x
  2. Step 2: Convert to fraction form
    1,319,290.20/1,978,935.30 = 432,826.20/x
  3. Step 3: Cross multiply
    1,319,290.20x = 1,978,935.30 × 432,826.20
  4. Step 4: Simplify right side
    1,319,290.20x = 856,535,045,944.86
  5. Step 5: Solve for x
    x = 856,535,045,944.86/1,319,290.20
  6. Step 6: Final answer
    x = 649,239.30

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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.