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Finding the Fourth Proportional to 591,548.40, 887,978.70 and 459,016.20

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Solution

The fourth proportional to 591,548.40, 887,978.70 and 459,016.20 is: 689,033.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,548.40 : 887,978.70 = 459,016.20 : x
  2. Step 2: Convert to fraction form
    591,548.40/887,978.70 = 459,016.20/x
  3. Step 3: Cross multiply
    591,548.40x = 887,978.70 × 459,016.20
  4. Step 4: Simplify right side
    591,548.40x = 407,596,608,554.94
  5. Step 5: Solve for x
    x = 407,596,608,554.94/591,548.40
  6. Step 6: Final answer
    x = 689,033.41

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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.