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Finding the Fourth Proportional to 657,883.01, 986,758.54 and 321,156.09

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Solution

The fourth proportional to 657,883.01, 986,758.54 and 321,156.09 is: 481,701.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,883.01 : 986,758.54 = 321,156.09 : x
  2. Step 2: Convert to fraction form
    657,883.01/986,758.54 = 321,156.09/x
  3. Step 3: Cross multiply
    657,883.01x = 986,758.54 × 321,156.09
  4. Step 4: Simplify right side
    657,883.01x = 316,903,513,677.62
  5. Step 5: Solve for x
    x = 316,903,513,677.62/657,883.01
  6. Step 6: Final answer
    x = 481,701.93

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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.