Home / 820,827.60-1,229,273.10-663,363.60

Finding the Fourth Proportional to 820,827.60, 1,229,273.10 and 663,363.60

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Solution

The fourth proportional to 820,827.60, 1,229,273.10 and 663,363.60 is: 993,454.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,827.60 : 1,229,273.10 = 663,363.60 : x
  2. Step 2: Convert to fraction form
    820,827.60/1,229,273.10 = 663,363.60/x
  3. Step 3: Cross multiply
    820,827.60x = 1,229,273.10 × 663,363.60
  4. Step 4: Simplify right side
    820,827.60x = 815,455,028,999.16
  5. Step 5: Solve for x
    x = 815,455,028,999.16/820,827.60
  6. Step 6: Final answer
    x = 993,454.69

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1.5x scale

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.