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Finding the Fourth Proportional to 490,302.09, 676,645.83 and 369,229.77

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Solution

The fourth proportional to 490,302.09, 676,645.83 and 369,229.77 is: 509,558.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,302.09 : 676,645.83 = 369,229.77 : x
  2. Step 2: Convert to fraction form
    490,302.09/676,645.83 = 369,229.77/x
  3. Step 3: Cross multiply
    490,302.09x = 676,645.83 × 369,229.77
  4. Step 4: Simplify right side
    490,302.09x = 249,837,784,182.36
  5. Step 5: Solve for x
    x = 249,837,784,182.36/490,302.09
  6. Step 6: Final answer
    x = 509,558.88

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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.