Home / 694,693.80-1,042,040.70-339,935.40

Finding the Fourth Proportional to 694,693.80, 1,042,040.70 and 339,935.40

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Solution

The fourth proportional to 694,693.80, 1,042,040.70 and 339,935.40 is: 509,903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,693.80 : 1,042,040.70 = 339,935.40 : x
  2. Step 2: Convert to fraction form
    694,693.80/1,042,040.70 = 339,935.40/x
  3. Step 3: Cross multiply
    694,693.80x = 1,042,040.70 × 339,935.40
  4. Step 4: Simplify right side
    694,693.80x = 354,226,522,170.78
  5. Step 5: Solve for x
    x = 354,226,522,170.78/694,693.80
  6. Step 6: Final answer
    x = 509,903.10

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Double scale
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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.