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Finding the Fourth Proportional to 750,720.10, 1,035,736.32 and 428,198.08

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Solution

The fourth proportional to 750,720.10, 1,035,736.32 and 428,198.08 is: 590,766.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,720.10 : 1,035,736.32 = 428,198.08 : x
  2. Step 2: Convert to fraction form
    750,720.10/1,035,736.32 = 428,198.08/x
  3. Step 3: Cross multiply
    750,720.10x = 1,035,736.32 × 428,198.08
  4. Step 4: Simplify right side
    750,720.10x = 443,500,303,610.27
  5. Step 5: Solve for x
    x = 443,500,303,610.27/750,720.10
  6. Step 6: Final answer
    x = 590,766.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.