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Finding the Fourth Proportional to 648,481.82, 894,920.00 and 406,774.58

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Solution

The fourth proportional to 648,481.82, 894,920.00 and 406,774.58 is: 561,358.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,481.82 : 894,920.00 = 406,774.58 : x
  2. Step 2: Convert to fraction form
    648,481.82/894,920.00 = 406,774.58/x
  3. Step 3: Cross multiply
    648,481.82x = 894,920.00 × 406,774.58
  4. Step 4: Simplify right side
    648,481.82x = 364,030,700,625.13
  5. Step 5: Solve for x
    x = 364,030,700,625.13/648,481.82
  6. Step 6: Final answer
    x = 561,358.38

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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.