Home / 738,351.96-1,018,926.09-398,820.21

Finding the Fourth Proportional to 738,351.96, 1,018,926.09 and 398,820.21

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Solution

The fourth proportional to 738,351.96, 1,018,926.09 and 398,820.21 is: 550,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,351.96 : 1,018,926.09 = 398,820.21 : x
  2. Step 2: Convert to fraction form
    738,351.96/1,018,926.09 = 398,820.21/x
  3. Step 3: Cross multiply
    738,351.96x = 1,018,926.09 × 398,820.21
  4. Step 4: Simplify right side
    738,351.96x = 406,368,317,188.28
  5. Step 5: Solve for x
    x = 406,368,317,188.28/738,351.96
  6. Step 6: Final answer
    x = 550,372.10

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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.