Home / 920,091.60-1,269,762.84-512,211.60

Finding the Fourth Proportional to 920,091.60, 1,269,762.84 and 512,211.60

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Solution

The fourth proportional to 920,091.60, 1,269,762.84 and 512,211.60 is: 706,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,091.60 : 1,269,762.84 = 512,211.60 : x
  2. Step 2: Convert to fraction form
    920,091.60/1,269,762.84 = 512,211.60/x
  3. Step 3: Cross multiply
    920,091.60x = 1,269,762.84 × 512,211.60
  4. Step 4: Simplify right side
    920,091.60x = 650,387,255,896.94
  5. Step 5: Solve for x
    x = 650,387,255,896.94/920,091.60
  6. Step 6: Final answer
    x = 706,872.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.