Home / 738,183.48-1,018,693.16-398,651.70

Finding the Fourth Proportional to 738,183.48, 1,018,693.16 and 398,651.70

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Solution

The fourth proportional to 738,183.48, 1,018,693.16 and 398,651.70 is: 550,139.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,183.48 : 1,018,693.16 = 398,651.70 : x
  2. Step 2: Convert to fraction form
    738,183.48/1,018,693.16 = 398,651.70/x
  3. Step 3: Cross multiply
    738,183.48x = 1,018,693.16 × 398,651.70
  4. Step 4: Simplify right side
    738,183.48x = 406,103,760,012.37
  5. Step 5: Solve for x
    x = 406,103,760,012.37/738,183.48
  6. Step 6: Final answer
    x = 550,139.32

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Double scale
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Similar ratio
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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.