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Finding the Fourth Proportional to 448,857.98, 676,285.42 and 406,220.66

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Solution

The fourth proportional to 448,857.98, 676,285.42 and 406,220.66 is: 612,044.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,857.98 : 676,285.42 = 406,220.66 : x
  2. Step 2: Convert to fraction form
    448,857.98/676,285.42 = 406,220.66/x
  3. Step 3: Cross multiply
    448,857.98x = 676,285.42 × 406,220.66
  4. Step 4: Simplify right side
    448,857.98x = 274,721,109,660.78
  5. Step 5: Solve for x
    x = 274,721,109,660.78/448,857.98
  6. Step 6: Final answer
    x = 612,044.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.