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Finding the Fourth Proportional to 720,457, 1,079,799.75 and 404,249.60

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Solution

The fourth proportional to 720,457, 1,079,799.75 and 404,249.60 is: 605,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,457 : 1,079,799.75 = 404,249.60 : x
  2. Step 2: Convert to fraction form
    720,457/1,079,799.75 = 404,249.60/x
  3. Step 3: Cross multiply
    720,457x = 1,079,799.75 × 404,249.60
  4. Step 4: Simplify right side
    720,457x = 436,508,617,017.60
  5. Step 5: Solve for x
    x = 436,508,617,017.60/720,457
  6. Step 6: Final answer
    x = 605,877.40

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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.