Home / 790,785.14-1,091,288.66-428,209.02

Finding the Fourth Proportional to 790,785.14, 1,091,288.66 and 428,209.02

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Solution

The fourth proportional to 790,785.14, 1,091,288.66 and 428,209.02 is: 590,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,785.14 : 1,091,288.66 = 428,209.02 : x
  2. Step 2: Convert to fraction form
    790,785.14/1,091,288.66 = 428,209.02/x
  3. Step 3: Cross multiply
    790,785.14x = 1,091,288.66 × 428,209.02
  4. Step 4: Simplify right side
    790,785.14x = 467,299,645,494.67
  5. Step 5: Solve for x
    x = 467,299,645,494.67/790,785.14
  6. Step 6: Final answer
    x = 590,931.25

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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.