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Finding the Fourth Proportional to 531,157.76, 732,991.04 and 289,450.88

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Solution

The fourth proportional to 531,157.76, 732,991.04 and 289,450.88 is: 399,438.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,157.76 : 732,991.04 = 289,450.88 : x
  2. Step 2: Convert to fraction form
    531,157.76/732,991.04 = 289,450.88/x
  3. Step 3: Cross multiply
    531,157.76x = 732,991.04 × 289,450.88
  4. Step 4: Simplify right side
    531,157.76x = 212,164,901,560.12
  5. Step 5: Solve for x
    x = 212,164,901,560.12/531,157.76
  6. Step 6: Final answer
    x = 399,438.58

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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.