Home / 714,429.45-985,922.87-392,133.69

Finding the Fourth Proportional to 714,429.45, 985,922.87 and 392,133.69

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Solution

The fourth proportional to 714,429.45, 985,922.87 and 392,133.69 is: 541,150.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,429.45 : 985,922.87 = 392,133.69 : x
  2. Step 2: Convert to fraction form
    714,429.45/985,922.87 = 392,133.69/x
  3. Step 3: Cross multiply
    714,429.45x = 985,922.87 × 392,133.69
  4. Step 4: Simplify right side
    714,429.45x = 386,613,571,107.82
  5. Step 5: Solve for x
    x = 386,613,571,107.82/714,429.45
  6. Step 6: Final answer
    x = 541,150.10

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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.