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Finding the Fourth Proportional to 1,404,936.56, 1,938,808.81 and 760,356.59

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Solution

The fourth proportional to 1,404,936.56, 1,938,808.81 and 760,356.59 is: 1,049,290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404,936.56 : 1,938,808.81 = 760,356.59 : x
  2. Step 2: Convert to fraction form
    1,404,936.56/1,938,808.81 = 760,356.59/x
  3. Step 3: Cross multiply
    1,404,936.56x = 1,938,808.81 × 760,356.59
  4. Step 4: Simplify right side
    1,404,936.56x = 1,474,186,046,689.96
  5. Step 5: Solve for x
    x = 1,474,186,046,689.96/1,404,936.56
  6. Step 6: Final answer
    x = 1,049,290.11

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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.