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Finding the Fourth Proportional to 820,313.60, 1,229,145.60 and 464,268.80

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Solution

The fourth proportional to 820,313.60, 1,229,145.60 and 464,268.80 is: 695,653.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,313.60 : 1,229,145.60 = 464,268.80 : x
  2. Step 2: Convert to fraction form
    820,313.60/1,229,145.60 = 464,268.80/x
  3. Step 3: Cross multiply
    820,313.60x = 1,229,145.60 × 464,268.80
  4. Step 4: Simplify right side
    820,313.60x = 570,653,952,737.28
  5. Step 5: Solve for x
    x = 570,653,952,737.28/820,313.60
  6. Step 6: Final answer
    x = 695,653.41

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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.