Home / 739,438.19-1,020,425.37-399,906.44

Finding the Fourth Proportional to 739,438.19, 1,020,425.37 and 399,906.44

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Solution

The fourth proportional to 739,438.19, 1,020,425.37 and 399,906.44 is: 551,871.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,438.19 : 1,020,425.37 = 399,906.44 : x
  2. Step 2: Convert to fraction form
    739,438.19/1,020,425.37 = 399,906.44/x
  3. Step 3: Cross multiply
    739,438.19x = 1,020,425.37 × 399,906.44
  4. Step 4: Simplify right side
    739,438.19x = 408,074,677,002.38
  5. Step 5: Solve for x
    x = 408,074,677,002.38/739,438.19
  6. Step 6: Final answer
    x = 551,871.25

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Half scale
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Double scale
Find fourth proportional to 739,439.19, 1,020,426.75 and 399,907.44
Similar ratio
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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.