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Finding the Fourth Proportional to 510,784.80, 764,794.80 and 400,192.80

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Solution

The fourth proportional to 510,784.80, 764,794.80 and 400,192.80 is: 599,206.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,784.80 : 764,794.80 = 400,192.80 : x
  2. Step 2: Convert to fraction form
    510,784.80/764,794.80 = 400,192.80/x
  3. Step 3: Cross multiply
    510,784.80x = 764,794.80 × 400,192.80
  4. Step 4: Simplify right side
    510,784.80x = 306,065,372,437.44
  5. Step 5: Solve for x
    x = 306,065,372,437.44/510,784.80
  6. Step 6: Final answer
    x = 599,206.11

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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.