Home / 820,400.60-1,229,276.10-464,355.80

Finding the Fourth Proportional to 820,400.60, 1,229,276.10 and 464,355.80

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Solution

The fourth proportional to 820,400.60, 1,229,276.10 and 464,355.80 is: 695,783.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,400.60 : 1,229,276.10 = 464,355.80 : x
  2. Step 2: Convert to fraction form
    820,400.60/1,229,276.10 = 464,355.80/x
  3. Step 3: Cross multiply
    820,400.60x = 1,229,276.10 × 464,355.80
  4. Step 4: Simplify right side
    820,400.60x = 570,821,486,836.38
  5. Step 5: Solve for x
    x = 570,821,486,836.38/820,400.60
  6. Step 6: Final answer
    x = 695,783.85

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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.