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Finding the Fourth Proportional to 479,643.37, 661,909.97 and 264,785.20

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Solution

The fourth proportional to 479,643.37, 661,909.97 and 264,785.20 is: 365,404.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,643.37 : 661,909.97 = 264,785.20 : x
  2. Step 2: Convert to fraction form
    479,643.37/661,909.97 = 264,785.20/x
  3. Step 3: Cross multiply
    479,643.37x = 661,909.97 × 264,785.20
  4. Step 4: Simplify right side
    479,643.37x = 175,263,960,809.74
  5. Step 5: Solve for x
    x = 175,263,960,809.74/479,643.37
  6. Step 6: Final answer
    x = 365,404.74

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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.