Home / 880,589.80-1,320,009.90-430,942.60

Finding the Fourth Proportional to 880,589.80, 1,320,009.90 and 430,942.60

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Solution

The fourth proportional to 880,589.80, 1,320,009.90 and 430,942.60 is: 645,985.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,589.80 : 1,320,009.90 = 430,942.60 : x
  2. Step 2: Convert to fraction form
    880,589.80/1,320,009.90 = 430,942.60/x
  3. Step 3: Cross multiply
    880,589.80x = 1,320,009.90 × 430,942.60
  4. Step 4: Simplify right side
    880,589.80x = 568,848,498,331.74
  5. Step 5: Solve for x
    x = 568,848,498,331.74/880,589.80
  6. Step 6: Final answer
    x = 645,985.79

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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.