Home / 714,837.20-986,478.07-388,150.73

Finding the Fourth Proportional to 714,837.20, 986,478.07 and 388,150.73

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Solution

The fourth proportional to 714,837.20, 986,478.07 and 388,150.73 is: 535,649.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,837.20 : 986,478.07 = 388,150.73 : x
  2. Step 2: Convert to fraction form
    714,837.20/986,478.07 = 388,150.73/x
  3. Step 3: Cross multiply
    714,837.20x = 986,478.07 × 388,150.73
  4. Step 4: Simplify right side
    714,837.20x = 382,902,177,096.72
  5. Step 5: Solve for x
    x = 382,902,177,096.72/714,837.20
  6. Step 6: Final answer
    x = 535,649.49

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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.