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Finding the Fourth Proportional to 560,965.88, 840,825.52 and 427,405.80

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Solution

The fourth proportional to 560,965.88, 840,825.52 and 427,405.80 is: 640,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,965.88 : 840,825.52 = 427,405.80 : x
  2. Step 2: Convert to fraction form
    560,965.88/840,825.52 = 427,405.80/x
  3. Step 3: Cross multiply
    560,965.88x = 840,825.52 × 427,405.80
  4. Step 4: Simplify right side
    560,965.88x = 359,373,704,036.02
  5. Step 5: Solve for x
    x = 359,373,704,036.02/560,965.88
  6. Step 6: Final answer
    x = 640,633.80

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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.