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Finding the Fourth Proportional to 510,316.80, 764,092.80 and 399,724.80

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Solution

The fourth proportional to 510,316.80, 764,092.80 and 399,724.80 is: 598,504.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,316.80 : 764,092.80 = 399,724.80 : x
  2. Step 2: Convert to fraction form
    510,316.80/764,092.80 = 399,724.80/x
  3. Step 3: Cross multiply
    510,316.80x = 764,092.80 × 399,724.80
  4. Step 4: Simplify right side
    510,316.80x = 305,426,841,661.44
  5. Step 5: Solve for x
    x = 305,426,841,661.44/510,316.80
  6. Step 6: Final answer
    x = 598,504.38

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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.