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Finding the Fourth Proportional to 664,359.80, 928,004.20 and 664,359.80

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Solution

The fourth proportional to 664,359.80, 928,004.20 and 664,359.80 is: 928,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,359.80 : 928,004.20 = 664,359.80 : x
  2. Step 2: Convert to fraction form
    664,359.80/928,004.20 = 664,359.80/x
  3. Step 3: Cross multiply
    664,359.80x = 928,004.20 × 664,359.80
  4. Step 4: Simplify right side
    664,359.80x = 616,528,684,711.16
  5. Step 5: Solve for x
    x = 616,528,684,711.16/664,359.80
  6. Step 6: Final answer
    x = 928,004.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.