Home / 730,421.64-1,008,628.19-455,249.12

Finding the Fourth Proportional to 730,421.64, 1,008,628.19 and 455,249.12

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Solution

The fourth proportional to 730,421.64, 1,008,628.19 and 455,249.12 is: 628,646.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,421.64 : 1,008,628.19 = 455,249.12 : x
  2. Step 2: Convert to fraction form
    730,421.64/1,008,628.19 = 455,249.12/x
  3. Step 3: Cross multiply
    730,421.64x = 1,008,628.19 × 455,249.12
  4. Step 4: Simplify right side
    730,421.64x = 459,177,091,999.68
  5. Step 5: Solve for x
    x = 459,177,091,999.68/730,421.64
  6. Step 6: Final answer
    x = 628,646.62

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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.