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Finding the Fourth Proportional to 656,228.88, 905,679.36 and 369,819.36

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Solution

The fourth proportional to 656,228.88, 905,679.36 and 369,819.36 is: 510,397.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,228.88 : 905,679.36 = 369,819.36 : x
  2. Step 2: Convert to fraction form
    656,228.88/905,679.36 = 369,819.36/x
  3. Step 3: Cross multiply
    656,228.88x = 905,679.36 × 369,819.36
  4. Step 4: Simplify right side
    656,228.88x = 334,937,761,280.41
  5. Step 5: Solve for x
    x = 334,937,761,280.41/656,228.88
  6. Step 6: Final answer
    x = 510,397.78

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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.