Home / 1,321,100.89-1,823,108.95-717,488.89

Finding the Fourth Proportional to 1,321,100.89, 1,823,108.95 and 717,488.89

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Solution

The fourth proportional to 1,321,100.89, 1,823,108.95 and 717,488.89 is: 990,129.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,100.89 : 1,823,108.95 = 717,488.89 : x
  2. Step 2: Convert to fraction form
    1,321,100.89/1,823,108.95 = 717,488.89/x
  3. Step 3: Cross multiply
    1,321,100.89x = 1,823,108.95 × 717,488.89
  4. Step 4: Simplify right side
    1,321,100.89x = 1,308,060,416,884.57
  5. Step 5: Solve for x
    x = 1,308,060,416,884.57/1,321,100.89
  6. Step 6: Final answer
    x = 990,129.09

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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.