Home / 790,785.09-1,091,288.67-428,208.95

Finding the Fourth Proportional to 790,785.09, 1,091,288.67 and 428,208.95

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Solution

The fourth proportional to 790,785.09, 1,091,288.67 and 428,208.95 is: 590,931.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,785.09 : 1,091,288.67 = 428,208.95 : x
  2. Step 2: Convert to fraction form
    790,785.09/1,091,288.67 = 428,208.95/x
  3. Step 3: Cross multiply
    790,785.09x = 1,091,288.67 × 428,208.95
  4. Step 4: Simplify right side
    790,785.09x = 467,299,570,071.15
  5. Step 5: Solve for x
    x = 467,299,570,071.15/790,785.09
  6. Step 6: Final answer
    x = 590,931.18

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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.