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Finding the Fourth Proportional to 664,785.40, 996,011.70 and 545,812.60

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Solution

The fourth proportional to 664,785.40, 996,011.70 and 545,812.60 is: 817,761.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,785.40 : 996,011.70 = 545,812.60 : x
  2. Step 2: Convert to fraction form
    664,785.40/996,011.70 = 545,812.60/x
  3. Step 3: Cross multiply
    664,785.40x = 996,011.70 × 545,812.60
  4. Step 4: Simplify right side
    664,785.40x = 543,635,735,607.42
  5. Step 5: Solve for x
    x = 543,635,735,607.42/664,785.40
  6. Step 6: Final answer
    x = 817,761.24

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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.