Home / 543,979.20-815,968.80-432,004.80

Finding the Fourth Proportional to 543,979.20, 815,968.80 and 432,004.80

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Solution

The fourth proportional to 543,979.20, 815,968.80 and 432,004.80 is: 648,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,979.20 : 815,968.80 = 432,004.80 : x
  2. Step 2: Convert to fraction form
    543,979.20/815,968.80 = 432,004.80/x
  3. Step 3: Cross multiply
    543,979.20x = 815,968.80 × 432,004.80
  4. Step 4: Simplify right side
    543,979.20x = 352,502,438,250.24
  5. Step 5: Solve for x
    x = 352,502,438,250.24/543,979.20
  6. Step 6: Final answer
    x = 648,007.20

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1.5x scale

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.