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Finding the Fourth Proportional to 544,430.40, 815,090.40 and 488,443.20

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Solution

The fourth proportional to 544,430.40, 815,090.40 and 488,443.20 is: 731,269.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,430.40 : 815,090.40 = 488,443.20 : x
  2. Step 2: Convert to fraction form
    544,430.40/815,090.40 = 488,443.20/x
  3. Step 3: Cross multiply
    544,430.40x = 815,090.40 × 488,443.20
  4. Step 4: Simplify right side
    544,430.40x = 398,125,363,265.28
  5. Step 5: Solve for x
    x = 398,125,363,265.28/544,430.40
  6. Step 6: Final answer
    x = 731,269.53

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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.