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Finding the Fourth Proportional to 574,213.66, 792,407.12 and 319,564.78

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Solution

The fourth proportional to 574,213.66, 792,407.12 and 319,564.78 is: 440,995.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,213.66 : 792,407.12 = 319,564.78 : x
  2. Step 2: Convert to fraction form
    574,213.66/792,407.12 = 319,564.78/x
  3. Step 3: Cross multiply
    574,213.66x = 792,407.12 × 319,564.78
  4. Step 4: Simplify right side
    574,213.66x = 253,225,406,973.23
  5. Step 5: Solve for x
    x = 253,225,406,973.23/574,213.66
  6. Step 6: Final answer
    x = 440,995.09

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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.