Home / 865,489.84-1,298,234.96-234,403.86

Finding the Fourth Proportional to 865,489.84, 1,298,234.96 and 234,403.86

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Solution

The fourth proportional to 865,489.84, 1,298,234.96 and 234,403.86 is: 351,605.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,489.84 : 1,298,234.96 = 234,403.86 : x
  2. Step 2: Convert to fraction form
    865,489.84/1,298,234.96 = 234,403.86/x
  3. Step 3: Cross multiply
    865,489.84x = 1,298,234.96 × 234,403.86
  4. Step 4: Simplify right side
    865,489.84x = 304,311,285,810.95
  5. Step 5: Solve for x
    x = 304,311,285,810.95/865,489.84
  6. Step 6: Final answer
    x = 351,605.84

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.