Home / 718,596,764.76-991,475,054.46-421,079,267.64

Finding the Fourth Proportional to 718,596,764.76, 991,475,054.46 and 421,079,267.64

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Solution

The fourth proportional to 718,596,764.76, 991,475,054.46 and 421,079,267.64 is: 580,978,944.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,596,764.76 : 991,475,054.46 = 421,079,267.64 : x
  2. Step 2: Convert to fraction form
    718,596,764.76/991,475,054.46 = 421,079,267.64/x
  3. Step 3: Cross multiply
    718,596,764.76x = 991,475,054.46 × 421,079,267.64
  4. Step 4: Simplify right side
    718,596,764.76x = 417,489,589,815,345,920
  5. Step 5: Solve for x
    x = 417,489,589,815,345,920/718,596,764.76
  6. Step 6: Final answer
    x = 580,978,944.37

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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.