Home / 1,129,865.50-1,558,835-639,768.04

Finding the Fourth Proportional to 1,129,865.50, 1,558,835 and 639,768.04

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Solution

The fourth proportional to 1,129,865.50, 1,558,835 and 639,768.04 is: 882,665.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,865.50 : 1,558,835 = 639,768.04 : x
  2. Step 2: Convert to fraction form
    1,129,865.50/1,558,835 = 639,768.04/x
  3. Step 3: Cross multiply
    1,129,865.50x = 1,558,835 × 639,768.04
  4. Step 4: Simplify right side
    1,129,865.50x = 997,292,812,633.40
  5. Step 5: Solve for x
    x = 997,292,812,633.40/1,129,865.50
  6. Step 6: Final answer
    x = 882,665.07

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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.