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Finding the Fourth Proportional to 636,221.52, 877,986.66 and 349,743.36

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Solution

The fourth proportional to 636,221.52, 877,986.66 and 349,743.36 is: 482,646.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,221.52 : 877,986.66 = 349,743.36 : x
  2. Step 2: Convert to fraction form
    636,221.52/877,986.66 = 349,743.36/x
  3. Step 3: Cross multiply
    636,221.52x = 877,986.66 × 349,743.36
  4. Step 4: Simplify right side
    636,221.52x = 307,070,004,503.58
  5. Step 5: Solve for x
    x = 307,070,004,503.58/636,221.52
  6. Step 6: Final answer
    x = 482,646.37

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1.5x scale

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.