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Finding the Fourth Proportional to 660,833.40, 992,027.70 and 656,167.80

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Solution

The fourth proportional to 660,833.40, 992,027.70 and 656,167.80 is: 985,023.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,833.40 : 992,027.70 = 656,167.80 : x
  2. Step 2: Convert to fraction form
    660,833.40/992,027.70 = 656,167.80/x
  3. Step 3: Cross multiply
    660,833.40x = 992,027.70 × 656,167.80
  4. Step 4: Simplify right side
    660,833.40x = 650,936,633,448.06
  5. Step 5: Solve for x
    x = 650,936,633,448.06/660,833.40
  6. Step 6: Final answer
    x = 985,023.81

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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.