Home / 1,129,866-1,558,835.69-639,768.54

Finding the Fourth Proportional to 1,129,866, 1,558,835.69 and 639,768.54

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Solution

The fourth proportional to 1,129,866, 1,558,835.69 and 639,768.54 is: 882,665.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,866 : 1,558,835.69 = 639,768.54 : x
  2. Step 2: Convert to fraction form
    1,129,866/1,558,835.69 = 639,768.54/x
  3. Step 3: Cross multiply
    1,129,866x = 1,558,835.69 × 639,768.54
  4. Step 4: Simplify right side
    1,129,866x = 997,294,033,491.19
  5. Step 5: Solve for x
    x = 997,294,033,491.19/1,129,866
  6. Step 6: Final answer
    x = 882,665.76

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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.