Home / 1,206,442.20-1,809,533.70-319,978.20

Finding the Fourth Proportional to 1,206,442.20, 1,809,533.70 and 319,978.20

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Solution

The fourth proportional to 1,206,442.20, 1,809,533.70 and 319,978.20 is: 479,932.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,442.20 : 1,809,533.70 = 319,978.20 : x
  2. Step 2: Convert to fraction form
    1,206,442.20/1,809,533.70 = 319,978.20/x
  3. Step 3: Cross multiply
    1,206,442.20x = 1,809,533.70 × 319,978.20
  4. Step 4: Simplify right side
    1,206,442.20x = 579,011,336,165.34
  5. Step 5: Solve for x
    x = 579,011,336,165.34/1,206,442.20
  6. Step 6: Final answer
    x = 479,932.93

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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.