Home / 1,129,631-1,558,890.78-620,341.88

Finding the Fourth Proportional to 1,129,631, 1,558,890.78 and 620,341.88

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Solution

The fourth proportional to 1,129,631, 1,558,890.78 and 620,341.88 is: 856,071.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,631 : 1,558,890.78 = 620,341.88 : x
  2. Step 2: Convert to fraction form
    1,129,631/1,558,890.78 = 620,341.88/x
  3. Step 3: Cross multiply
    1,129,631x = 1,558,890.78 × 620,341.88
  4. Step 4: Simplify right side
    1,129,631x = 967,045,237,179.87
  5. Step 5: Solve for x
    x = 967,045,237,179.87/1,129,631
  6. Step 6: Final answer
    x = 856,071.79

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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.