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Finding the Fourth Proportional to 476,689.20, 715,208.94 and 448,520.64

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Solution

The fourth proportional to 476,689.20, 715,208.94 and 448,520.64 is: 672,945.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,689.20 : 715,208.94 = 448,520.64 : x
  2. Step 2: Convert to fraction form
    476,689.20/715,208.94 = 448,520.64/x
  3. Step 3: Cross multiply
    476,689.20x = 715,208.94 × 448,520.64
  4. Step 4: Simplify right side
    476,689.20x = 320,785,971,502.52
  5. Step 5: Solve for x
    x = 320,785,971,502.52/476,689.20
  6. Step 6: Final answer
    x = 672,945.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.