Home / 1,108,009.54-1,529,174.66-642,965.86

Finding the Fourth Proportional to 1,108,009.54, 1,529,174.66 and 642,965.86

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Solution

The fourth proportional to 1,108,009.54, 1,529,174.66 and 642,965.86 is: 887,363.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,009.54 : 1,529,174.66 = 642,965.86 : x
  2. Step 2: Convert to fraction form
    1,108,009.54/1,529,174.66 = 642,965.86/x
  3. Step 3: Cross multiply
    1,108,009.54x = 1,529,174.66 × 642,965.86
  4. Step 4: Simplify right side
    1,108,009.54x = 983,207,100,357.11
  5. Step 5: Solve for x
    x = 983,207,100,357.11/1,108,009.54
  6. Step 6: Final answer
    x = 887,363.39

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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.