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Finding the Fourth Proportional to 484,446, 668,535.48 and 272,478

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Solution

The fourth proportional to 484,446, 668,535.48 and 272,478 is: 376,019.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,446 : 668,535.48 = 272,478 : x
  2. Step 2: Convert to fraction form
    484,446/668,535.48 = 272,478/x
  3. Step 3: Cross multiply
    484,446x = 668,535.48 × 272,478
  4. Step 4: Simplify right side
    484,446x = 182,161,210,519.44
  5. Step 5: Solve for x
    x = 182,161,210,519.44/484,446
  6. Step 6: Final answer
    x = 376,019.64

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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.