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Finding the Fourth Proportional to 573,147.18, 790,927.38 and 318,491.82

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Solution

The fourth proportional to 573,147.18, 790,927.38 and 318,491.82 is: 439,509.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,147.18 : 790,927.38 = 318,491.82 : x
  2. Step 2: Convert to fraction form
    573,147.18/790,927.38 = 318,491.82/x
  3. Step 3: Cross multiply
    573,147.18x = 790,927.38 × 318,491.82
  4. Step 4: Simplify right side
    573,147.18x = 251,903,900,744.03
  5. Step 5: Solve for x
    x = 251,903,900,744.03/573,147.18
  6. Step 6: Final answer
    x = 439,509.97

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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.