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Finding the Fourth Proportional to 481,782.80, 721,885.82 and 291,666.93

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Solution

The fourth proportional to 481,782.80, 721,885.82 and 291,666.93 is: 437,023.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,782.80 : 721,885.82 = 291,666.93 : x
  2. Step 2: Convert to fraction form
    481,782.80/721,885.82 = 291,666.93/x
  3. Step 3: Cross multiply
    481,782.80x = 721,885.82 × 291,666.93
  4. Step 4: Simplify right side
    481,782.80x = 210,550,220,929.93
  5. Step 5: Solve for x
    x = 210,550,220,929.93/481,782.80
  6. Step 6: Final answer
    x = 437,023.12

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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.