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Finding the Fourth Proportional to 520,783.30, 718,757.58 and 329,814.46

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Solution

The fourth proportional to 520,783.30, 718,757.58 and 329,814.46 is: 455,192.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,783.30 : 718,757.58 = 329,814.46 : x
  2. Step 2: Convert to fraction form
    520,783.30/718,757.58 = 329,814.46/x
  3. Step 3: Cross multiply
    520,783.30x = 718,757.58 × 329,814.46
  4. Step 4: Simplify right side
    520,783.30x = 237,056,643,118.61
  5. Step 5: Solve for x
    x = 237,056,643,118.61/520,783.30
  6. Step 6: Final answer
    x = 455,192.48

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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.