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Finding the Fourth Proportional to 1,239,977.97, 1,710,965.84 and 730,611.09

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Solution

The fourth proportional to 1,239,977.97, 1,710,965.84 and 730,611.09 is: 1,008,123.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,977.97 : 1,710,965.84 = 730,611.09 : x
  2. Step 2: Convert to fraction form
    1,239,977.97/1,710,965.84 = 730,611.09/x
  3. Step 3: Cross multiply
    1,239,977.97x = 1,710,965.84 × 730,611.09
  4. Step 4: Simplify right side
    1,239,977.97x = 1,250,050,613,662.11
  5. Step 5: Solve for x
    x = 1,250,050,613,662.11/1,239,977.97
  6. Step 6: Final answer
    x = 1,008,123.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.