Home / 738,618.38-1,019,293.07-399,086.63

Finding the Fourth Proportional to 738,618.38, 1,019,293.07 and 399,086.63

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Solution

The fourth proportional to 738,618.38, 1,019,293.07 and 399,086.63 is: 550,739.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,618.38 : 1,019,293.07 = 399,086.63 : x
  2. Step 2: Convert to fraction form
    738,618.38/1,019,293.07 = 399,086.63/x
  3. Step 3: Cross multiply
    738,618.38x = 1,019,293.07 × 399,086.63
  4. Step 4: Simplify right side
    738,618.38x = 406,786,229,196.76
  5. Step 5: Solve for x
    x = 406,786,229,196.76/738,618.38
  6. Step 6: Final answer
    x = 550,739.38

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1.5x scale

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.