Home / 1,129,141.62-1,558,208.78-612,905.76

Finding the Fourth Proportional to 1,129,141.62, 1,558,208.78 and 612,905.76

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Solution

The fourth proportional to 1,129,141.62, 1,558,208.78 and 612,905.76 is: 845,806.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,141.62 : 1,558,208.78 = 612,905.76 : x
  2. Step 2: Convert to fraction form
    1,129,141.62/1,558,208.78 = 612,905.76/x
  3. Step 3: Cross multiply
    1,129,141.62x = 1,558,208.78 × 612,905.76
  4. Step 4: Simplify right side
    1,129,141.62x = 955,035,136,544.57
  5. Step 5: Solve for x
    x = 955,035,136,544.57/1,129,141.62
  6. Step 6: Final answer
    x = 845,806.34

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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.