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Finding the Fourth Proportional to 636,206.76, 877,976.28 and 349,738.92

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Solution

The fourth proportional to 636,206.76, 877,976.28 and 349,738.92 is: 482,645.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,206.76 : 877,976.28 = 349,738.92 : x
  2. Step 2: Convert to fraction form
    636,206.76/877,976.28 = 349,738.92/x
  3. Step 3: Cross multiply
    636,206.76x = 877,976.28 × 349,738.92
  4. Step 4: Simplify right side
    636,206.76x = 307,062,475,952.82
  5. Step 5: Solve for x
    x = 307,062,475,952.82/636,206.76
  6. Step 6: Final answer
    x = 482,645.73

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Half scale
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Double scale
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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.