Home / 738,442.25-1,019,051.22-398,910.50

Finding the Fourth Proportional to 738,442.25, 1,019,051.22 and 398,910.50

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Solution

The fourth proportional to 738,442.25, 1,019,051.22 and 398,910.50 is: 550,496.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,442.25 : 1,019,051.22 = 398,910.50 : x
  2. Step 2: Convert to fraction form
    738,442.25/1,019,051.22 = 398,910.50/x
  3. Step 3: Cross multiply
    738,442.25x = 1,019,051.22 × 398,910.50
  4. Step 4: Simplify right side
    738,442.25x = 406,510,234,243.44
  5. Step 5: Solve for x
    x = 406,510,234,243.44/738,442.25
  6. Step 6: Final answer
    x = 550,496.99

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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.