Home / 738,653.40-1,019,340.03-399,121.65

Finding the Fourth Proportional to 738,653.40, 1,019,340.03 and 399,121.65

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Solution

The fourth proportional to 738,653.40, 1,019,340.03 and 399,121.65 is: 550,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,653.40 : 1,019,340.03 = 399,121.65 : x
  2. Step 2: Convert to fraction form
    738,653.40/1,019,340.03 = 399,121.65/x
  3. Step 3: Cross multiply
    738,653.40x = 1,019,340.03 × 399,121.65
  4. Step 4: Simplify right side
    738,653.40x = 406,840,674,684.65
  5. Step 5: Solve for x
    x = 406,840,674,684.65/738,653.40
  6. Step 6: Final answer
    x = 550,786.98

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Double scale
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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.