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Finding the Fourth Proportional to 402,529.60, 600,780.12 and 395,885.96

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Solution

The fourth proportional to 402,529.60, 600,780.12 and 395,885.96 is: 590,864.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,529.60 : 600,780.12 = 395,885.96 : x
  2. Step 2: Convert to fraction form
    402,529.60/600,780.12 = 395,885.96/x
  3. Step 3: Cross multiply
    402,529.60x = 600,780.12 × 395,885.96
  4. Step 4: Simplify right side
    402,529.60x = 237,840,414,555.12
  5. Step 5: Solve for x
    x = 237,840,414,555.12/402,529.60
  6. Step 6: Final answer
    x = 590,864.41

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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.