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Finding the Fourth Proportional to 678,662.88, 936,320.34 and 433,790.88

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Solution

The fourth proportional to 678,662.88, 936,320.34 and 433,790.88 is: 598,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,662.88 : 936,320.34 = 433,790.88 : x
  2. Step 2: Convert to fraction form
    678,662.88/936,320.34 = 433,790.88/x
  3. Step 3: Cross multiply
    678,662.88x = 936,320.34 × 433,790.88
  4. Step 4: Simplify right side
    678,662.88x = 406,167,224,250.50
  5. Step 5: Solve for x
    x = 406,167,224,250.50/678,662.88
  6. Step 6: Final answer
    x = 598,481.57

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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.