Home / 790,740.75-1,091,222.82-428,164.86

Finding the Fourth Proportional to 790,740.75, 1,091,222.82 and 428,164.86

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Solution

The fourth proportional to 790,740.75, 1,091,222.82 and 428,164.86 is: 590,867.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,740.75 : 1,091,222.82 = 428,164.86 : x
  2. Step 2: Convert to fraction form
    790,740.75/1,091,222.82 = 428,164.86/x
  3. Step 3: Cross multiply
    790,740.75x = 1,091,222.82 × 428,164.86
  4. Step 4: Simplify right side
    790,740.75x = 467,223,265,954.11
  5. Step 5: Solve for x
    x = 467,223,265,954.11/790,740.75
  6. Step 6: Final answer
    x = 590,867.82

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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.