Home / 1,221,188.65-1,685,442.07-677,499.60

Finding the Fourth Proportional to 1,221,188.65, 1,685,442.07 and 677,499.60

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Solution

The fourth proportional to 1,221,188.65, 1,685,442.07 and 677,499.60 is: 935,061.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,188.65 : 1,685,442.07 = 677,499.60 : x
  2. Step 2: Convert to fraction form
    1,221,188.65/1,685,442.07 = 677,499.60/x
  3. Step 3: Cross multiply
    1,221,188.65x = 1,685,442.07 × 677,499.60
  4. Step 4: Simplify right side
    1,221,188.65x = 1,141,886,320,234.02
  5. Step 5: Solve for x
    x = 1,141,886,320,234.02/1,221,188.65
  6. Step 6: Final answer
    x = 935,061.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.