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Finding the Fourth Proportional to 385,529.40, 577,606.80 and 328,793.88

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Solution

The fourth proportional to 385,529.40, 577,606.80 and 328,793.88 is: 492,604.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,529.40 : 577,606.80 = 328,793.88 : x
  2. Step 2: Convert to fraction form
    385,529.40/577,606.80 = 328,793.88/x
  3. Step 3: Cross multiply
    385,529.40x = 577,606.80 × 328,793.88
  4. Step 4: Simplify right side
    385,529.40x = 189,913,580,886.38
  5. Step 5: Solve for x
    x = 189,913,580,886.38/385,529.40
  6. Step 6: Final answer
    x = 492,604.66

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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.