Home / 829,673.20-1,244,509.80-431,092.45

Finding the Fourth Proportional to 829,673.20, 1,244,509.80 and 431,092.45

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Solution

The fourth proportional to 829,673.20, 1,244,509.80 and 431,092.45 is: 646,638.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,673.20 : 1,244,509.80 = 431,092.45 : x
  2. Step 2: Convert to fraction form
    829,673.20/1,244,509.80 = 431,092.45/x
  3. Step 3: Cross multiply
    829,673.20x = 1,244,509.80 × 431,092.45
  4. Step 4: Simplify right side
    829,673.20x = 536,498,778,731.01
  5. Step 5: Solve for x
    x = 536,498,778,731.01/829,673.20
  6. Step 6: Final answer
    x = 646,638.68

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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.