Home / 979,216.22-1,350,971.97-639,881.30

Finding the Fourth Proportional to 979,216.22, 1,350,971.97 and 639,881.30

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Solution

The fourth proportional to 979,216.22, 1,350,971.97 and 639,881.30 is: 882,809.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,216.22 : 1,350,971.97 = 639,881.30 : x
  2. Step 2: Convert to fraction form
    979,216.22/1,350,971.97 = 639,881.30/x
  3. Step 3: Cross multiply
    979,216.22x = 1,350,971.97 × 639,881.30
  4. Step 4: Simplify right side
    979,216.22x = 864,461,701,405.04
  5. Step 5: Solve for x
    x = 864,461,701,405.04/979,216.22
  6. Step 6: Final answer
    x = 882,809.82

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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.