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Finding the Fourth Proportional to 657,640.80, 987,627.60 and 508,244.40

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Solution

The fourth proportional to 657,640.80, 987,627.60 and 508,244.40 is: 763,268.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,640.80 : 987,627.60 = 508,244.40 : x
  2. Step 2: Convert to fraction form
    657,640.80/987,627.60 = 508,244.40/x
  3. Step 3: Cross multiply
    657,640.80x = 987,627.60 × 508,244.40
  4. Step 4: Simplify right side
    657,640.80x = 501,956,196,985.44
  5. Step 5: Solve for x
    x = 501,956,196,985.44/657,640.80
  6. Step 6: Final answer
    x = 763,268.03

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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.