Home / 765,199.32-1,055,983.88-438,505.88

Finding the Fourth Proportional to 765,199.32, 1,055,983.88 and 438,505.88

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Solution

The fourth proportional to 765,199.32, 1,055,983.88 and 438,505.88 is: 605,143.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,199.32 : 1,055,983.88 = 438,505.88 : x
  2. Step 2: Convert to fraction form
    765,199.32/1,055,983.88 = 438,505.88/x
  3. Step 3: Cross multiply
    765,199.32x = 1,055,983.88 × 438,505.88
  4. Step 4: Simplify right side
    765,199.32x = 463,055,140,565.21
  5. Step 5: Solve for x
    x = 463,055,140,565.21/765,199.32
  6. Step 6: Final answer
    x = 605,143.17

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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.