Home / 790,784.50-1,091,287.80-428,208.38

Finding the Fourth Proportional to 790,784.50, 1,091,287.80 and 428,208.38

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Solution

The fourth proportional to 790,784.50, 1,091,287.80 and 428,208.38 is: 590,930.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,784.50 : 1,091,287.80 = 428,208.38 : x
  2. Step 2: Convert to fraction form
    790,784.50/1,091,287.80 = 428,208.38/x
  3. Step 3: Cross multiply
    790,784.50x = 1,091,287.80 × 428,208.38
  4. Step 4: Simplify right side
    790,784.50x = 467,298,580,951.76
  5. Step 5: Solve for x
    x = 467,298,580,951.76/790,784.50
  6. Step 6: Final answer
    x = 590,930.37

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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.