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Finding the Fourth Proportional to 890,606.70, 1,336,072.05 and 291,401.10

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Solution

The fourth proportional to 890,606.70, 1,336,072.05 and 291,401.10 is: 437,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,606.70 : 1,336,072.05 = 291,401.10 : x
  2. Step 2: Convert to fraction form
    890,606.70/1,336,072.05 = 291,401.10/x
  3. Step 3: Cross multiply
    890,606.70x = 1,336,072.05 × 291,401.10
  4. Step 4: Simplify right side
    890,606.70x = 389,332,865,049.26
  5. Step 5: Solve for x
    x = 389,332,865,049.26/890,606.70
  6. Step 6: Final answer
    x = 437,154.66

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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.