Home / 786,062.20-1,083,667.44-664,716.64

Finding the Fourth Proportional to 786,062.20, 1,083,667.44 and 664,716.64

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Solution

The fourth proportional to 786,062.20, 1,083,667.44 and 664,716.64 is: 916,380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,062.20 : 1,083,667.44 = 664,716.64 : x
  2. Step 2: Convert to fraction form
    786,062.20/1,083,667.44 = 664,716.64/x
  3. Step 3: Cross multiply
    786,062.20x = 1,083,667.44 × 664,716.64
  4. Step 4: Simplify right side
    786,062.20x = 720,331,779,594.20
  5. Step 5: Solve for x
    x = 720,331,779,594.20/786,062.20
  6. Step 6: Final answer
    x = 916,380.13

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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.