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Finding the Fourth Proportional to 490,518.68, 677,100.76 and 286,635.90

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Solution

The fourth proportional to 490,518.68, 677,100.76 and 286,635.90 is: 395,665.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,518.68 : 677,100.76 = 286,635.90 : x
  2. Step 2: Convert to fraction form
    490,518.68/677,100.76 = 286,635.90/x
  3. Step 3: Cross multiply
    490,518.68x = 677,100.76 × 286,635.90
  4. Step 4: Simplify right side
    490,518.68x = 194,081,385,733.28
  5. Step 5: Solve for x
    x = 194,081,385,733.28/490,518.68
  6. Step 6: Final answer
    x = 395,665.64

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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.