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Finding the Fourth Proportional to 521,968, 720,316.56 and 283,504

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Solution

The fourth proportional to 521,968, 720,316.56 and 283,504 is: 391,235.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,968 : 720,316.56 = 283,504 : x
  2. Step 2: Convert to fraction form
    521,968/720,316.56 = 283,504/x
  3. Step 3: Cross multiply
    521,968x = 720,316.56 × 283,504
  4. Step 4: Simplify right side
    521,968x = 204,212,626,026.24
  5. Step 5: Solve for x
    x = 204,212,626,026.24/521,968
  6. Step 6: Final answer
    x = 391,235.91

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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.