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Finding the Fourth Proportional to 490,296.76, 676,626.88 and 272,509.78

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Solution

The fourth proportional to 490,296.76, 676,626.88 and 272,509.78 is: 376,073.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,296.76 : 676,626.88 = 272,509.78 : x
  2. Step 2: Convert to fraction form
    490,296.76/676,626.88 = 272,509.78/x
  3. Step 3: Cross multiply
    490,296.76x = 676,626.88 × 272,509.78
  4. Step 4: Simplify right side
    490,296.76x = 184,387,439,838.05
  5. Step 5: Solve for x
    x = 184,387,439,838.05/490,296.76
  6. Step 6: Final answer
    x = 376,073.14

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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.