Home / 999,147.22-1,378,830.93-551,611.86

Finding the Fourth Proportional to 999,147.22, 1,378,830.93 and 551,611.86

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Solution

The fourth proportional to 999,147.22, 1,378,830.93 and 551,611.86 is: 761,228.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,147.22 : 1,378,830.93 = 551,611.86 : x
  2. Step 2: Convert to fraction form
    999,147.22/1,378,830.93 = 551,611.86/x
  3. Step 3: Cross multiply
    999,147.22x = 1,378,830.93 × 551,611.86
  4. Step 4: Simplify right side
    999,147.22x = 760,579,493,922.83
  5. Step 5: Solve for x
    x = 760,579,493,922.83/999,147.22
  6. Step 6: Final answer
    x = 761,228.65

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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.