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Finding the Fourth Proportional to 709,361.73, 978,940.75 and 403,482.10

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Solution

The fourth proportional to 709,361.73, 978,940.75 and 403,482.10 is: 556,817.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,361.73 : 978,940.75 = 403,482.10 : x
  2. Step 2: Convert to fraction form
    709,361.73/978,940.75 = 403,482.10/x
  3. Step 3: Cross multiply
    709,361.73x = 978,940.75 × 403,482.10
  4. Step 4: Simplify right side
    709,361.73x = 394,985,069,585.58
  5. Step 5: Solve for x
    x = 394,985,069,585.58/709,361.73
  6. Step 6: Final answer
    x = 556,817.56

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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.