Home / 820,285.80-1,230,428.70-377,917.80

Finding the Fourth Proportional to 820,285.80, 1,230,428.70 and 377,917.80

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Solution

The fourth proportional to 820,285.80, 1,230,428.70 and 377,917.80 is: 566,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,285.80 : 1,230,428.70 = 377,917.80 : x
  2. Step 2: Convert to fraction form
    820,285.80/1,230,428.70 = 377,917.80/x
  3. Step 3: Cross multiply
    820,285.80x = 1,230,428.70 × 377,917.80
  4. Step 4: Simplify right side
    820,285.80x = 465,000,907,360.86
  5. Step 5: Solve for x
    x = 465,000,907,360.86/820,285.80
  6. Step 6: Final answer
    x = 566,876.70

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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.