Home / 872,486.20-1,308,815.70-303,779.80

Finding the Fourth Proportional to 872,486.20, 1,308,815.70 and 303,779.80

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Solution

The fourth proportional to 872,486.20, 1,308,815.70 and 303,779.80 is: 455,699.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,486.20 : 1,308,815.70 = 303,779.80 : x
  2. Step 2: Convert to fraction form
    872,486.20/1,308,815.70 = 303,779.80/x
  3. Step 3: Cross multiply
    872,486.20x = 1,308,815.70 × 303,779.80
  4. Step 4: Simplify right side
    872,486.20x = 397,591,771,582.86
  5. Step 5: Solve for x
    x = 397,591,771,582.86/872,486.20
  6. Step 6: Final answer
    x = 455,699.78

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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.