Home / 1,290,489.56-1,780,864.80-717,524.72

Finding the Fourth Proportional to 1,290,489.56, 1,780,864.80 and 717,524.72

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Solution

The fourth proportional to 1,290,489.56, 1,780,864.80 and 717,524.72 is: 990,178.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,489.56 : 1,780,864.80 = 717,524.72 : x
  2. Step 2: Convert to fraction form
    1,290,489.56/1,780,864.80 = 717,524.72/x
  3. Step 3: Cross multiply
    1,290,489.56x = 1,780,864.80 × 717,524.72
  4. Step 4: Simplify right side
    1,290,489.56x = 1,277,814,512,061.06
  5. Step 5: Solve for x
    x = 1,277,814,512,061.06/1,290,489.56
  6. Step 6: Final answer
    x = 990,178.11

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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.