Home / 490,255.32-676,280.04-455,577.87

Finding the Fourth Proportional to 490,255.32, 676,280.04 and 455,577.87

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Solution

The fourth proportional to 490,255.32, 676,280.04 and 455,577.87 is: 628,444.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,255.32 : 676,280.04 = 455,577.87 : x
  2. Step 2: Convert to fraction form
    490,255.32/676,280.04 = 455,577.87/x
  3. Step 3: Cross multiply
    490,255.32x = 676,280.04 × 455,577.87
  4. Step 4: Simplify right side
    490,255.32x = 308,098,220,146.72
  5. Step 5: Solve for x
    x = 308,098,220,146.72/490,255.32
  6. Step 6: Final answer
    x = 628,444.42

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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.