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Finding the Fourth Proportional to 531,891.40, 734,008.98 and 290,174.12

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Solution

The fourth proportional to 531,891.40, 734,008.98 and 290,174.12 is: 400,439.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,891.40 : 734,008.98 = 290,174.12 : x
  2. Step 2: Convert to fraction form
    531,891.40/734,008.98 = 290,174.12/x
  3. Step 3: Cross multiply
    531,891.40x = 734,008.98 × 290,174.12
  4. Step 4: Simplify right side
    531,891.40x = 212,990,409,843.60
  5. Step 5: Solve for x
    x = 212,990,409,843.60/531,891.40
  6. Step 6: Final answer
    x = 400,439.66

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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.