Home / 694,743.80-1,042,115.70-429,023.30

Finding the Fourth Proportional to 694,743.80, 1,042,115.70 and 429,023.30

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Solution

The fourth proportional to 694,743.80, 1,042,115.70 and 429,023.30 is: 643,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,743.80 : 1,042,115.70 = 429,023.30 : x
  2. Step 2: Convert to fraction form
    694,743.80/1,042,115.70 = 429,023.30/x
  3. Step 3: Cross multiply
    694,743.80x = 1,042,115.70 × 429,023.30
  4. Step 4: Simplify right side
    694,743.80x = 447,091,916,595.81
  5. Step 5: Solve for x
    x = 447,091,916,595.81/694,743.80
  6. Step 6: Final answer
    x = 643,534.95

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.