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Finding the Fourth Proportional to 490,649.42, 676,996.94 and 286,660.94

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Solution

The fourth proportional to 490,649.42, 676,996.94 and 286,660.94 is: 395,534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,649.42 : 676,996.94 = 286,660.94 : x
  2. Step 2: Convert to fraction form
    490,649.42/676,996.94 = 286,660.94/x
  3. Step 3: Cross multiply
    490,649.42x = 676,996.94 × 286,660.94
  4. Step 4: Simplify right side
    490,649.42x = 194,068,574,379.23
  5. Step 5: Solve for x
    x = 194,068,574,379.23/490,649.42
  6. Step 6: Final answer
    x = 395,534.10

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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.