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Finding the Fourth Proportional to 510,928.44, 765,084.11 and 426,478.65

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Solution

The fourth proportional to 510,928.44, 765,084.11 and 426,478.65 is: 638,625.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,928.44 : 765,084.11 = 426,478.65 : x
  2. Step 2: Convert to fraction form
    510,928.44/765,084.11 = 426,478.65/x
  3. Step 3: Cross multiply
    510,928.44x = 765,084.11 × 426,478.65
  4. Step 4: Simplify right side
    510,928.44x = 326,292,036,236.86
  5. Step 5: Solve for x
    x = 326,292,036,236.86/510,928.44
  6. Step 6: Final answer
    x = 638,625.71

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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.