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Finding the Fourth Proportional to 490,432.26, 676,774.92 and 286,502.07

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Solution

The fourth proportional to 490,432.26, 676,774.92 and 286,502.07 is: 395,360.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,432.26 : 676,774.92 = 286,502.07 : x
  2. Step 2: Convert to fraction form
    490,432.26/676,774.92 = 286,502.07/x
  3. Step 3: Cross multiply
    490,432.26x = 676,774.92 × 286,502.07
  4. Step 4: Simplify right side
    490,432.26x = 193,897,415,504.08
  5. Step 5: Solve for x
    x = 193,897,415,504.08/490,432.26
  6. Step 6: Final answer
    x = 395,360.24

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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.