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Finding the Fourth Proportional to 445,513.80, 668,270.70 and 442,561.35

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Solution

The fourth proportional to 445,513.80, 668,270.70 and 442,561.35 is: 663,842.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,513.80 : 668,270.70 = 442,561.35 : x
  2. Step 2: Convert to fraction form
    445,513.80/668,270.70 = 442,561.35/x
  3. Step 3: Cross multiply
    445,513.80x = 668,270.70 × 442,561.35
  4. Step 4: Simplify right side
    445,513.80x = 295,750,783,157.45
  5. Step 5: Solve for x
    x = 295,750,783,157.45/445,513.80
  6. Step 6: Final answer
    x = 663,842.03

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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.