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Finding the Fourth Proportional to 486,706.33, 671,284.42 and 418,837.51

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Solution

The fourth proportional to 486,706.33, 671,284.42 and 418,837.51 is: 577,677.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,706.33 : 671,284.42 = 418,837.51 : x
  2. Step 2: Convert to fraction form
    486,706.33/671,284.42 = 418,837.51/x
  3. Step 3: Cross multiply
    486,706.33x = 671,284.42 × 418,837.51
  4. Step 4: Simplify right side
    486,706.33x = 281,159,094,974.59
  5. Step 5: Solve for x
    x = 281,159,094,974.59/486,706.33
  6. Step 6: Final answer
    x = 577,677.09

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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.