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Finding the Fourth Proportional to 641,432.49, 962,128.89 and 304,715.49

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Solution

The fourth proportional to 641,432.49, 962,128.89 and 304,715.49 is: 457,063.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,432.49 : 962,128.89 = 304,715.49 : x
  2. Step 2: Convert to fraction form
    641,432.49/962,128.89 = 304,715.49/x
  3. Step 3: Cross multiply
    641,432.49x = 962,128.89 × 304,715.49
  4. Step 4: Simplify right side
    641,432.49x = 293,175,576,159.51
  5. Step 5: Solve for x
    x = 293,175,576,159.51/641,432.49
  6. Step 6: Final answer
    x = 457,063.81

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.