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Finding the Fourth Proportional to 491,720.40, 737,580.60 and 487,054.80

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Solution

The fourth proportional to 491,720.40, 737,580.60 and 487,054.80 is: 730,582.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,720.40 : 737,580.60 = 487,054.80 : x
  2. Step 2: Convert to fraction form
    491,720.40/737,580.60 = 487,054.80/x
  3. Step 3: Cross multiply
    491,720.40x = 737,580.60 × 487,054.80
  4. Step 4: Simplify right side
    491,720.40x = 359,242,171,616.88
  5. Step 5: Solve for x
    x = 359,242,171,616.88/491,720.40
  6. Step 6: Final answer
    x = 730,582.20

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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.