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Finding the Fourth Proportional to 455,663.40, 628,689.24 and 262,060.56

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Solution

The fourth proportional to 455,663.40, 628,689.24 and 262,060.56 is: 361,570.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,663.40 : 628,689.24 = 262,060.56 : x
  2. Step 2: Convert to fraction form
    455,663.40/628,689.24 = 262,060.56/x
  3. Step 3: Cross multiply
    455,663.40x = 628,689.24 × 262,060.56
  4. Step 4: Simplify right side
    455,663.40x = 164,754,654,300.37
  5. Step 5: Solve for x
    x = 164,754,654,300.37/455,663.40
  6. Step 6: Final answer
    x = 361,570.96

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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.