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Finding the Fourth Proportional to 531,087.90, 732,892.04 and 289,372.47

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Solution

The fourth proportional to 531,087.90, 732,892.04 and 289,372.47 is: 399,328.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,087.90 : 732,892.04 = 289,372.47 : x
  2. Step 2: Convert to fraction form
    531,087.90/732,892.04 = 289,372.47/x
  3. Step 3: Cross multiply
    531,087.90x = 732,892.04 × 289,372.47
  4. Step 4: Simplify right side
    531,087.90x = 212,078,779,858.14
  5. Step 5: Solve for x
    x = 212,078,779,858.14/531,087.90
  6. Step 6: Final answer
    x = 399,328.96

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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.