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Finding the Fourth Proportional to 531,179.49, 733,006.36 and 289,456.88

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Solution

The fourth proportional to 531,179.49, 733,006.36 and 289,456.88 is: 399,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,179.49 : 733,006.36 = 289,456.88 : x
  2. Step 2: Convert to fraction form
    531,179.49/733,006.36 = 289,456.88/x
  3. Step 3: Cross multiply
    531,179.49x = 733,006.36 × 289,456.88
  4. Step 4: Simplify right side
    531,179.49x = 212,173,733,985.76
  5. Step 5: Solve for x
    x = 212,173,733,985.76/531,179.49
  6. Step 6: Final answer
    x = 399,438.87

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1.5x scale

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.