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Finding the Fourth Proportional to 445,151.56, 668,394.37 and 385,364.45

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Solution

The fourth proportional to 445,151.56, 668,394.37 and 385,364.45 is: 578,624.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,151.56 : 668,394.37 = 385,364.45 : x
  2. Step 2: Convert to fraction form
    445,151.56/668,394.37 = 385,364.45/x
  3. Step 3: Cross multiply
    445,151.56x = 668,394.37 × 385,364.45
  4. Step 4: Simplify right side
    445,151.56x = 257,575,425,436.18
  5. Step 5: Solve for x
    x = 257,575,425,436.18/445,151.56
  6. Step 6: Final answer
    x = 578,624.12

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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.