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Finding the Fourth Proportional to 656,172.85, 905,485.08 and 369,709.87

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Solution

The fourth proportional to 656,172.85, 905,485.08 and 369,709.87 is: 510,180.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,172.85 : 905,485.08 = 369,709.87 : x
  2. Step 2: Convert to fraction form
    656,172.85/905,485.08 = 369,709.87/x
  3. Step 3: Cross multiply
    656,172.85x = 905,485.08 × 369,709.87
  4. Step 4: Simplify right side
    656,172.85x = 334,766,771,213.74
  5. Step 5: Solve for x
    x = 334,766,771,213.74/656,172.85
  6. Step 6: Final answer
    x = 510,180.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.