Home / 790,709.98-1,091,175.18-428,126.35

Finding the Fourth Proportional to 790,709.98, 1,091,175.18 and 428,126.35

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Solution

The fourth proportional to 790,709.98, 1,091,175.18 and 428,126.35 is: 590,811.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,709.98 : 1,091,175.18 = 428,126.35 : x
  2. Step 2: Convert to fraction form
    790,709.98/1,091,175.18 = 428,126.35/x
  3. Step 3: Cross multiply
    790,709.98x = 1,091,175.18 × 428,126.35
  4. Step 4: Simplify right side
    790,709.98x = 467,160,847,023.99
  5. Step 5: Solve for x
    x = 467,160,847,023.99/790,709.98
  6. Step 6: Final answer
    x = 590,811.88

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Double scale
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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.