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Finding the Fourth Proportional to 482,621.69, 666,048.12 and 278,709.91

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Solution

The fourth proportional to 482,621.69, 666,048.12 and 278,709.91 is: 384,637.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,621.69 : 666,048.12 = 278,709.91 : x
  2. Step 2: Convert to fraction form
    482,621.69/666,048.12 = 278,709.91/x
  3. Step 3: Cross multiply
    482,621.69x = 666,048.12 × 278,709.91
  4. Step 4: Simplify right side
    482,621.69x = 185,634,212,617.11
  5. Step 5: Solve for x
    x = 185,634,212,617.11/482,621.69
  6. Step 6: Final answer
    x = 384,637.11

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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.