Home / 904,122.80-1,357,739.40-639,738.80

Finding the Fourth Proportional to 904,122.80, 1,357,739.40 and 639,738.80

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Solution

The fourth proportional to 904,122.80, 1,357,739.40 and 639,738.80 is: 960,708.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,122.80 : 1,357,739.40 = 639,738.80 : x
  2. Step 2: Convert to fraction form
    904,122.80/1,357,739.40 = 639,738.80/x
  3. Step 3: Cross multiply
    904,122.80x = 1,357,739.40 × 639,738.80
  4. Step 4: Simplify right side
    904,122.80x = 868,598,574,468.72
  5. Step 5: Solve for x
    x = 868,598,574,468.72/904,122.80
  6. Step 6: Final answer
    x = 960,708.63

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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.