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Finding the Fourth Proportional to 521,889.64, 720,207.66 and 295,578.88

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Solution

The fourth proportional to 521,889.64, 720,207.66 and 295,578.88 is: 407,898.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,889.64 : 720,207.66 = 295,578.88 : x
  2. Step 2: Convert to fraction form
    521,889.64/720,207.66 = 295,578.88/x
  3. Step 3: Cross multiply
    521,889.64x = 720,207.66 × 295,578.88
  4. Step 4: Simplify right side
    521,889.64x = 212,878,173,510.22
  5. Step 5: Solve for x
    x = 212,878,173,510.22/521,889.64
  6. Step 6: Final answer
    x = 407,898.83

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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.