Home / 407,979.06-611,968.48-127,496.32

Finding the Fourth Proportional to 407,979.06, 611,968.48 and 127,496.32

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Solution

The fourth proportional to 407,979.06, 611,968.48 and 127,496.32 is: 191,244.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,979.06 : 611,968.48 = 127,496.32 : x
  2. Step 2: Convert to fraction form
    407,979.06/611,968.48 = 127,496.32/x
  3. Step 3: Cross multiply
    407,979.06x = 611,968.48 × 127,496.32
  4. Step 4: Simplify right side
    407,979.06x = 78,023,729,155.99
  5. Step 5: Solve for x
    x = 78,023,729,155.99/407,979.06
  6. Step 6: Final answer
    x = 191,244.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.