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Finding the Fourth Proportional to 615,072.40, 922,608.60 and 447,110.80

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Solution

The fourth proportional to 615,072.40, 922,608.60 and 447,110.80 is: 670,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,072.40 : 922,608.60 = 447,110.80 : x
  2. Step 2: Convert to fraction form
    615,072.40/922,608.60 = 447,110.80/x
  3. Step 3: Cross multiply
    615,072.40x = 922,608.60 × 447,110.80
  4. Step 4: Simplify right side
    615,072.40x = 412,508,269,232.88
  5. Step 5: Solve for x
    x = 412,508,269,232.88/615,072.40
  6. Step 6: Final answer
    x = 670,666.20

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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.