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Finding the Fourth Proportional to 660,729.63, 990,085.56 and 491,431.22

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Solution

The fourth proportional to 660,729.63, 990,085.56 and 491,431.22 is: 736,396.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,729.63 : 990,085.56 = 491,431.22 : x
  2. Step 2: Convert to fraction form
    660,729.63/990,085.56 = 491,431.22/x
  3. Step 3: Cross multiply
    660,729.63x = 990,085.56 × 491,431.22
  4. Step 4: Simplify right side
    660,729.63x = 486,558,949,704.76
  5. Step 5: Solve for x
    x = 486,558,949,704.76/660,729.63
  6. Step 6: Final answer
    x = 736,396.44

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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.