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Finding the Fourth Proportional to 490,803.60, 736,205.40 and 487,693.20

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Solution

The fourth proportional to 490,803.60, 736,205.40 and 487,693.20 is: 731,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,803.60 : 736,205.40 = 487,693.20 : x
  2. Step 2: Convert to fraction form
    490,803.60/736,205.40 = 487,693.20/x
  3. Step 3: Cross multiply
    490,803.60x = 736,205.40 × 487,693.20
  4. Step 4: Simplify right side
    490,803.60x = 359,042,367,383.28
  5. Step 5: Solve for x
    x = 359,042,367,383.28/490,803.60
  6. Step 6: Final answer
    x = 731,539.80

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Similar ratio
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1.5x scale

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.