Home / 780,197.30-1,076,663.85-431,336.22

Finding the Fourth Proportional to 780,197.30, 1,076,663.85 and 431,336.22

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Solution

The fourth proportional to 780,197.30, 1,076,663.85 and 431,336.22 is: 595,239.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,197.30 : 1,076,663.85 = 431,336.22 : x
  2. Step 2: Convert to fraction form
    780,197.30/1,076,663.85 = 431,336.22/x
  3. Step 3: Cross multiply
    780,197.30x = 1,076,663.85 × 431,336.22
  4. Step 4: Simplify right side
    780,197.30x = 464,404,115,269.65
  5. Step 5: Solve for x
    x = 464,404,115,269.65/780,197.30
  6. Step 6: Final answer
    x = 595,239.33

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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.