Home / 677,979.36-935,611.38-387,597.24

Finding the Fourth Proportional to 677,979.36, 935,611.38 and 387,597.24

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Solution

The fourth proportional to 677,979.36, 935,611.38 and 387,597.24 is: 534,884.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,979.36 : 935,611.38 = 387,597.24 : x
  2. Step 2: Convert to fraction form
    677,979.36/935,611.38 = 387,597.24/x
  3. Step 3: Cross multiply
    677,979.36x = 935,611.38 × 387,597.24
  4. Step 4: Simplify right side
    677,979.36x = 362,640,388,600.59
  5. Step 5: Solve for x
    x = 362,640,388,600.59/677,979.36
  6. Step 6: Final answer
    x = 534,884.11

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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.