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Finding the Fourth Proportional to 445,769.58, 665,143.80 and 418,648.08

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Solution

The fourth proportional to 445,769.58, 665,143.80 and 418,648.08 is: 624,675.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,769.58 : 665,143.80 = 418,648.08 : x
  2. Step 2: Convert to fraction form
    445,769.58/665,143.80 = 418,648.08/x
  3. Step 3: Cross multiply
    445,769.58x = 665,143.80 × 418,648.08
  4. Step 4: Simplify right side
    445,769.58x = 278,461,174,793.90
  5. Step 5: Solve for x
    x = 278,461,174,793.90/445,769.58
  6. Step 6: Final answer
    x = 624,675.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.