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Finding the Fourth Proportional to 652,097.88, 899,679.96 and 393,878.34

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Solution

The fourth proportional to 652,097.88, 899,679.96 and 393,878.34 is: 543,422.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,097.88 : 899,679.96 = 393,878.34 : x
  2. Step 2: Convert to fraction form
    652,097.88/899,679.96 = 393,878.34/x
  3. Step 3: Cross multiply
    652,097.88x = 899,679.96 × 393,878.34
  4. Step 4: Simplify right side
    652,097.88x = 354,364,449,176.07
  5. Step 5: Solve for x
    x = 354,364,449,176.07/652,097.88
  6. Step 6: Final answer
    x = 543,422.18

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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.