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Finding the Fourth Proportional to 490,053.88, 676,253.40 and 286,116.10

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Solution

The fourth proportional to 490,053.88, 676,253.40 and 286,116.10 is: 394,827.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,053.88 : 676,253.40 = 286,116.10 : x
  2. Step 2: Convert to fraction form
    490,053.88/676,253.40 = 286,116.10/x
  3. Step 3: Cross multiply
    490,053.88x = 676,253.40 × 286,116.10
  4. Step 4: Simplify right side
    490,053.88x = 193,486,985,419.74
  5. Step 5: Solve for x
    x = 193,486,985,419.74/490,053.88
  6. Step 6: Final answer
    x = 394,827.98

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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.