Home / 521,864.64-720,190.08-295,505.28

Finding the Fourth Proportional to 521,864.64, 720,190.08 and 295,505.28

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Solution

The fourth proportional to 521,864.64, 720,190.08 and 295,505.28 is: 407,806.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,864.64 : 720,190.08 = 295,505.28 : x
  2. Step 2: Convert to fraction form
    521,864.64/720,190.08 = 295,505.28/x
  3. Step 3: Cross multiply
    521,864.64x = 720,190.08 × 295,505.28
  4. Step 4: Simplify right side
    521,864.64x = 212,819,971,243.62
  5. Step 5: Solve for x
    x = 212,819,971,243.62/521,864.64
  6. Step 6: Final answer
    x = 407,806.84

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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.