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Finding the Fourth Proportional to 457,986.60, 686,659.90 and 270,901.80

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Solution

The fourth proportional to 457,986.60, 686,659.90 and 270,901.80 is: 406,163.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,986.60 : 686,659.90 = 270,901.80 : x
  2. Step 2: Convert to fraction form
    457,986.60/686,659.90 = 270,901.80/x
  3. Step 3: Cross multiply
    457,986.60x = 686,659.90 × 270,901.80
  4. Step 4: Simplify right side
    457,986.60x = 186,017,402,897.82
  5. Step 5: Solve for x
    x = 186,017,402,897.82/457,986.60
  6. Step 6: Final answer
    x = 406,163.42

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1.5x scale

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.