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Finding the Fourth Proportional to 613,379.20, 920,256.39 and 314,071.49

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Solution

The fourth proportional to 613,379.20, 920,256.39 and 314,071.49 is: 471,203.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,379.20 : 920,256.39 = 314,071.49 : x
  2. Step 2: Convert to fraction form
    613,379.20/920,256.39 = 314,071.49/x
  3. Step 3: Cross multiply
    613,379.20x = 920,256.39 × 314,071.49
  4. Step 4: Simplify right side
    613,379.20x = 289,026,297,889.96
  5. Step 5: Solve for x
    x = 289,026,297,889.96/613,379.20
  6. Step 6: Final answer
    x = 471,203.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.