Home / 979,109.91-1,350,825.26-639,774.99

Finding the Fourth Proportional to 979,109.91, 1,350,825.26 and 639,774.99

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Solution

The fourth proportional to 979,109.91, 1,350,825.26 and 639,774.99 is: 882,663.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,109.91 : 1,350,825.26 = 639,774.99 : x
  2. Step 2: Convert to fraction form
    979,109.91/1,350,825.26 = 639,774.99/x
  3. Step 3: Cross multiply
    979,109.91x = 1,350,825.26 × 639,774.99
  4. Step 4: Simplify right side
    979,109.91x = 864,224,214,009.37
  5. Step 5: Solve for x
    x = 864,224,214,009.37/979,109.91
  6. Step 6: Final answer
    x = 882,663.13

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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.