Home / 738,550.32-1,019,199.96-399,018.48

Finding the Fourth Proportional to 738,550.32, 1,019,199.96 and 399,018.48

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Solution

The fourth proportional to 738,550.32, 1,019,199.96 and 399,018.48 is: 550,645.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,550.32 : 1,019,199.96 = 399,018.48 : x
  2. Step 2: Convert to fraction form
    738,550.32/1,019,199.96 = 399,018.48/x
  3. Step 3: Cross multiply
    738,550.32x = 1,019,199.96 × 399,018.48
  4. Step 4: Simplify right side
    738,550.32x = 406,679,618,855.26
  5. Step 5: Solve for x
    x = 406,679,618,855.26/738,550.32
  6. Step 6: Final answer
    x = 550,645.78

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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.