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Finding the Fourth Proportional to 647,748.41, 893,887.81 and 357,372.22

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Solution

The fourth proportional to 647,748.41, 893,887.81 and 357,372.22 is: 493,170.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,748.41 : 893,887.81 = 357,372.22 : x
  2. Step 2: Convert to fraction form
    647,748.41/893,887.81 = 357,372.22/x
  3. Step 3: Cross multiply
    647,748.41x = 893,887.81 × 357,372.22
  4. Step 4: Simplify right side
    647,748.41x = 319,450,671,090.64
  5. Step 5: Solve for x
    x = 319,450,671,090.64/647,748.41
  6. Step 6: Final answer
    x = 493,170.91

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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.