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Finding the Fourth Proportional to 692,638.25, 955,999.91 and 406,250.60

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Solution

The fourth proportional to 692,638.25, 955,999.91 and 406,250.60 is: 560,719.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,638.25 : 955,999.91 = 406,250.60 : x
  2. Step 2: Convert to fraction form
    692,638.25/955,999.91 = 406,250.60/x
  3. Step 3: Cross multiply
    692,638.25x = 955,999.91 × 406,250.60
  4. Step 4: Simplify right side
    692,638.25x = 388,375,537,037.45
  5. Step 5: Solve for x
    x = 388,375,537,037.45/692,638.25
  6. Step 6: Final answer
    x = 560,719.16

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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.