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Finding the Fourth Proportional to 1,213,221, 1,674,244.98 and 676,677

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Solution

The fourth proportional to 1,213,221, 1,674,244.98 and 676,677 is: 933,814.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,221 : 1,674,244.98 = 676,677 : x
  2. Step 2: Convert to fraction form
    1,213,221/1,674,244.98 = 676,677/x
  3. Step 3: Cross multiply
    1,213,221x = 1,674,244.98 × 676,677
  4. Step 4: Simplify right side
    1,213,221x = 1,132,923,070,331.46
  5. Step 5: Solve for x
    x = 1,132,923,070,331.46/1,213,221
  6. Step 6: Final answer
    x = 933,814.26

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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.