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Finding the Fourth Proportional to 573,144.48, 790,933.68 and 318,490.32

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Solution

The fourth proportional to 573,144.48, 790,933.68 and 318,490.32 is: 439,513.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,144.48 : 790,933.68 = 318,490.32 : x
  2. Step 2: Convert to fraction form
    573,144.48/790,933.68 = 318,490.32/x
  3. Step 3: Cross multiply
    573,144.48x = 790,933.68 × 318,490.32
  4. Step 4: Simplify right side
    573,144.48x = 251,904,720,841.98
  5. Step 5: Solve for x
    x = 251,904,720,841.98/573,144.48
  6. Step 6: Final answer
    x = 439,513.47

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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.