Home / 739,438.57-1,020,425.89-399,906.82

Finding the Fourth Proportional to 739,438.57, 1,020,425.89 and 399,906.82

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Solution

The fourth proportional to 739,438.57, 1,020,425.89 and 399,906.82 is: 551,871.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,438.57 : 1,020,425.89 = 399,906.82 : x
  2. Step 2: Convert to fraction form
    739,438.57/1,020,425.89 = 399,906.82/x
  3. Step 3: Cross multiply
    739,438.57x = 1,020,425.89 × 399,906.82
  4. Step 4: Simplify right side
    739,438.57x = 408,075,267,613.44
  5. Step 5: Solve for x
    x = 408,075,267,613.44/739,438.57
  6. Step 6: Final answer
    x = 551,871.77

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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.