Home / 905,999.77-1,250,280.49-498,108.55

Finding the Fourth Proportional to 905,999.77, 1,250,280.49 and 498,108.55

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Solution

The fourth proportional to 905,999.77, 1,250,280.49 and 498,108.55 is: 687,390.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,999.77 : 1,250,280.49 = 498,108.55 : x
  2. Step 2: Convert to fraction form
    905,999.77/1,250,280.49 = 498,108.55/x
  3. Step 3: Cross multiply
    905,999.77x = 1,250,280.49 × 498,108.55
  4. Step 4: Simplify right side
    905,999.77x = 622,775,403,847.62
  5. Step 5: Solve for x
    x = 622,775,403,847.62/905,999.77
  6. Step 6: Final answer
    x = 687,390.24

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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.