Home / 790,700.60-1,091,168.52-428,128.76

Finding the Fourth Proportional to 790,700.60, 1,091,168.52 and 428,128.76

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Solution

The fourth proportional to 790,700.60, 1,091,168.52 and 428,128.76 is: 590,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,700.60 : 1,091,168.52 = 428,128.76 : x
  2. Step 2: Convert to fraction form
    790,700.60/1,091,168.52 = 428,128.76/x
  3. Step 3: Cross multiply
    790,700.60x = 1,091,168.52 × 428,128.76
  4. Step 4: Simplify right side
    790,700.60x = 467,160,625,418.64
  5. Step 5: Solve for x
    x = 467,160,625,418.64/790,700.60
  6. Step 6: Final answer
    x = 590,818.60

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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.