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Finding the Fourth Proportional to 621,461.02, 857,487.45 and 363,287.83

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Solution

The fourth proportional to 621,461.02, 857,487.45 and 363,287.83 is: 501,261.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,461.02 : 857,487.45 = 363,287.83 : x
  2. Step 2: Convert to fraction form
    621,461.02/857,487.45 = 363,287.83/x
  3. Step 3: Cross multiply
    621,461.02x = 857,487.45 × 363,287.83
  4. Step 4: Simplify right side
    621,461.02x = 311,514,754,962.73
  5. Step 5: Solve for x
    x = 311,514,754,962.73/621,461.02
  6. Step 6: Final answer
    x = 501,261.94

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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.