Home / 685,006.20-1,027,509.30-665,323.20

Finding the Fourth Proportional to 685,006.20, 1,027,509.30 and 665,323.20

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Solution

The fourth proportional to 685,006.20, 1,027,509.30 and 665,323.20 is: 997,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,006.20 : 1,027,509.30 = 665,323.20 : x
  2. Step 2: Convert to fraction form
    685,006.20/1,027,509.30 = 665,323.20/x
  3. Step 3: Cross multiply
    685,006.20x = 1,027,509.30 × 665,323.20
  4. Step 4: Simplify right side
    685,006.20x = 683,625,775,505.76
  5. Step 5: Solve for x
    x = 683,625,775,505.76/685,006.20
  6. Step 6: Final answer
    x = 997,984.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.