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Finding the Fourth Proportional to 487,284.84, 672,536.13 and 283,453.95

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Solution

The fourth proportional to 487,284.84, 672,536.13 and 283,453.95 is: 391,214.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,284.84 : 672,536.13 = 283,453.95 : x
  2. Step 2: Convert to fraction form
    487,284.84/672,536.13 = 283,453.95/x
  3. Step 3: Cross multiply
    487,284.84x = 672,536.13 × 283,453.95
  4. Step 4: Simplify right side
    487,284.84x = 190,633,022,566.21
  5. Step 5: Solve for x
    x = 190,633,022,566.21/487,284.84
  6. Step 6: Final answer
    x = 391,214.76

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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.