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Finding the Fourth Proportional to 656,128.34, 905,460.28 and 369,652.94

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Solution

The fourth proportional to 656,128.34, 905,460.28 and 369,652.94 is: 510,122.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,128.34 : 905,460.28 = 369,652.94 : x
  2. Step 2: Convert to fraction form
    656,128.34/905,460.28 = 369,652.94/x
  3. Step 3: Cross multiply
    656,128.34x = 905,460.28 × 369,652.94
  4. Step 4: Simplify right side
    656,128.34x = 334,706,049,103.79
  5. Step 5: Solve for x
    x = 334,706,049,103.79/656,128.34
  6. Step 6: Final answer
    x = 510,122.84

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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.