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Finding the Fourth Proportional to 572,813.65, 790,304.93 and 331,008.13

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Solution

The fourth proportional to 572,813.65, 790,304.93 and 331,008.13 is: 456,688.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,813.65 : 790,304.93 = 331,008.13 : x
  2. Step 2: Convert to fraction form
    572,813.65/790,304.93 = 331,008.13/x
  3. Step 3: Cross multiply
    572,813.65x = 790,304.93 × 331,008.13
  4. Step 4: Simplify right side
    572,813.65x = 261,597,355,354.04
  5. Step 5: Solve for x
    x = 261,597,355,354.04/572,813.65
  6. Step 6: Final answer
    x = 456,688.41

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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.