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Finding the Fourth Proportional to 663,070.07, 988,354.38 and 629,412.14

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Solution

The fourth proportional to 663,070.07, 988,354.38 and 629,412.14 is: 938,184.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,070.07 : 988,354.38 = 629,412.14 : x
  2. Step 2: Convert to fraction form
    663,070.07/988,354.38 = 629,412.14/x
  3. Step 3: Cross multiply
    663,070.07x = 988,354.38 × 629,412.14
  4. Step 4: Simplify right side
    663,070.07x = 622,082,240,452.40
  5. Step 5: Solve for x
    x = 622,082,240,452.40/663,070.07
  6. Step 6: Final answer
    x = 938,184.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.