Home / 1,259,619.75-1,889,430.99-312,990.47

Finding the Fourth Proportional to 1,259,619.75, 1,889,430.99 and 312,990.47

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Solution

The fourth proportional to 1,259,619.75, 1,889,430.99 and 312,990.47 is: 469,486.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,619.75 : 1,889,430.99 = 312,990.47 : x
  2. Step 2: Convert to fraction form
    1,259,619.75/1,889,430.99 = 312,990.47/x
  3. Step 3: Cross multiply
    1,259,619.75x = 1,889,430.99 × 312,990.47
  4. Step 4: Simplify right side
    1,259,619.75x = 591,373,893,592.67
  5. Step 5: Solve for x
    x = 591,373,893,592.67/1,259,619.75
  6. Step 6: Final answer
    x = 469,486.04

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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.