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Finding the Fourth Proportional to 636,518.26, 878,146.59 and 364,440.75

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Solution

The fourth proportional to 636,518.26, 878,146.59 and 364,440.75 is: 502,785.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,518.26 : 878,146.59 = 364,440.75 : x
  2. Step 2: Convert to fraction form
    636,518.26/878,146.59 = 364,440.75/x
  3. Step 3: Cross multiply
    636,518.26x = 878,146.59 × 364,440.75
  4. Step 4: Simplify right side
    636,518.26x = 320,032,401,869.54
  5. Step 5: Solve for x
    x = 320,032,401,869.54/636,518.26
  6. Step 6: Final answer
    x = 502,785.89

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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.