Home / 1,290,274.56-1,780,582.56-717,323.52

Finding the Fourth Proportional to 1,290,274.56, 1,780,582.56 and 717,323.52

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Solution

The fourth proportional to 1,290,274.56, 1,780,582.56 and 717,323.52 is: 989,908.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,274.56 : 1,780,582.56 = 717,323.52 : x
  2. Step 2: Convert to fraction form
    1,290,274.56/1,780,582.56 = 717,323.52/x
  3. Step 3: Cross multiply
    1,290,274.56x = 1,780,582.56 × 717,323.52
  4. Step 4: Simplify right side
    1,290,274.56x = 1,277,253,749,589.81
  5. Step 5: Solve for x
    x = 1,277,253,749,589.81/1,290,274.56
  6. Step 6: Final answer
    x = 989,908.50

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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.