Home / 739,145.57-1,020,020.97-399,613.73

Finding the Fourth Proportional to 739,145.57, 1,020,020.97 and 399,613.73

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Solution

The fourth proportional to 739,145.57, 1,020,020.97 and 399,613.73 is: 551,466.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,145.57 : 1,020,020.97 = 399,613.73 : x
  2. Step 2: Convert to fraction form
    739,145.57/1,020,020.97 = 399,613.73/x
  3. Step 3: Cross multiply
    739,145.57x = 1,020,020.97 × 399,613.73
  4. Step 4: Simplify right side
    739,145.57x = 407,614,382,501.85
  5. Step 5: Solve for x
    x = 407,614,382,501.85/739,145.57
  6. Step 6: Final answer
    x = 551,466.99

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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.