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Finding the Fourth Proportional to 573,186.88, 790,937.76 and 318,496.96

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Solution

The fourth proportional to 573,186.88, 790,937.76 and 318,496.96 is: 439,492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,186.88 : 790,937.76 = 318,496.96 : x
  2. Step 2: Convert to fraction form
    573,186.88/790,937.76 = 318,496.96/x
  3. Step 3: Cross multiply
    573,186.88x = 790,937.76 × 318,496.96
  4. Step 4: Simplify right side
    573,186.88x = 251,911,272,109.21
  5. Step 5: Solve for x
    x = 251,911,272,109.21/573,186.88
  6. Step 6: Final answer
    x = 439,492.39

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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.