Home / 543,942.12-815,222.52-307,417.80

Finding the Fourth Proportional to 543,942.12, 815,222.52 and 307,417.80

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Solution

The fourth proportional to 543,942.12, 815,222.52 and 307,417.80 is: 460,736.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,942.12 : 815,222.52 = 307,417.80 : x
  2. Step 2: Convert to fraction form
    543,942.12/815,222.52 = 307,417.80/x
  3. Step 3: Cross multiply
    543,942.12x = 815,222.52 × 307,417.80
  4. Step 4: Simplify right side
    543,942.12x = 250,613,913,608.86
  5. Step 5: Solve for x
    x = 250,613,913,608.86/543,942.12
  6. Step 6: Final answer
    x = 460,736.36

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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.