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Finding the Fourth Proportional to 453,398.48, 679,309.56 and 318,175.76

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Solution

The fourth proportional to 453,398.48, 679,309.56 and 318,175.76 is: 476,710.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,398.48 : 679,309.56 = 318,175.76 : x
  2. Step 2: Convert to fraction form
    453,398.48/679,309.56 = 318,175.76/x
  3. Step 3: Cross multiply
    453,398.48x = 679,309.56 × 318,175.76
  4. Step 4: Simplify right side
    453,398.48x = 216,139,835,528.27
  5. Step 5: Solve for x
    x = 216,139,835,528.27/453,398.48
  6. Step 6: Final answer
    x = 476,710.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.