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Finding the Fourth Proportional to 636,665.94, 878,339.73 and 360,965.73

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Solution

The fourth proportional to 636,665.94, 878,339.73 and 360,965.73 is: 497,985.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,665.94 : 878,339.73 = 360,965.73 : x
  2. Step 2: Convert to fraction form
    636,665.94/878,339.73 = 360,965.73/x
  3. Step 3: Cross multiply
    636,665.94x = 878,339.73 × 360,965.73
  4. Step 4: Simplify right side
    636,665.94x = 317,050,541,827.45
  5. Step 5: Solve for x
    x = 317,050,541,827.45/636,665.94
  6. Step 6: Final answer
    x = 497,985.71

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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.