Home / 739,287.62-1,020,216.22-399,755.06

Finding the Fourth Proportional to 739,287.62, 1,020,216.22 and 399,755.06

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Solution

The fourth proportional to 739,287.62, 1,020,216.22 and 399,755.06 is: 551,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,287.62 : 1,020,216.22 = 399,755.06 : x
  2. Step 2: Convert to fraction form
    739,287.62/1,020,216.22 = 399,755.06/x
  3. Step 3: Cross multiply
    739,287.62x = 1,020,216.22 × 399,755.06
  4. Step 4: Simplify right side
    739,287.62x = 407,836,590,138.61
  5. Step 5: Solve for x
    x = 407,836,590,138.61/739,287.62
  6. Step 6: Final answer
    x = 551,661.60

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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.