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Finding the Fourth Proportional to 1,979,566.58, 2,969,348.78 and 717,392.18

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Solution

The fourth proportional to 1,979,566.58, 2,969,348.78 and 717,392.18 is: 1,076,087.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979,566.58 : 2,969,348.78 = 717,392.18 : x
  2. Step 2: Convert to fraction form
    1,979,566.58/2,969,348.78 = 717,392.18/x
  3. Step 3: Cross multiply
    1,979,566.58x = 2,969,348.78 × 717,392.18
  4. Step 4: Simplify right side
    1,979,566.58x = 2,130,187,594,464.54
  5. Step 5: Solve for x
    x = 2,130,187,594,464.54/1,979,566.58
  6. Step 6: Final answer
    x = 1,076,087.87

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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.