Home / 880,588.80-1,320,008.40-430,941.60

Finding the Fourth Proportional to 880,588.80, 1,320,008.40 and 430,941.60

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Solution

The fourth proportional to 880,588.80, 1,320,008.40 and 430,941.60 is: 645,984.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,588.80 : 1,320,008.40 = 430,941.60 : x
  2. Step 2: Convert to fraction form
    880,588.80/1,320,008.40 = 430,941.60/x
  3. Step 3: Cross multiply
    880,588.80x = 1,320,008.40 × 430,941.60
  4. Step 4: Simplify right side
    880,588.80x = 568,846,531,909.44
  5. Step 5: Solve for x
    x = 568,846,531,909.44/880,588.80
  6. Step 6: Final answer
    x = 645,984.29

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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.