Home / 739,172.23-1,020,059.16-399,640.48

Finding the Fourth Proportional to 739,172.23, 1,020,059.16 and 399,640.48

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Solution

The fourth proportional to 739,172.23, 1,020,059.16 and 399,640.48 is: 551,504.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,172.23 : 1,020,059.16 = 399,640.48 : x
  2. Step 2: Convert to fraction form
    739,172.23/1,020,059.16 = 399,640.48/x
  3. Step 3: Cross multiply
    739,172.23x = 1,020,059.16 × 399,640.48
  4. Step 4: Simplify right side
    739,172.23x = 407,656,929,780.65
  5. Step 5: Solve for x
    x = 407,656,929,780.65/739,172.23
  6. Step 6: Final answer
    x = 551,504.66

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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.