Home / 419,787.40-629,681.10-403,457.80

Finding the Fourth Proportional to 419,787.40, 629,681.10 and 403,457.80

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Solution

The fourth proportional to 419,787.40, 629,681.10 and 403,457.80 is: 605,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,787.40 : 629,681.10 = 403,457.80 : x
  2. Step 2: Convert to fraction form
    419,787.40/629,681.10 = 403,457.80/x
  3. Step 3: Cross multiply
    419,787.40x = 629,681.10 × 403,457.80
  4. Step 4: Simplify right side
    419,787.40x = 254,049,751,307.58
  5. Step 5: Solve for x
    x = 254,049,751,307.58/419,787.40
  6. Step 6: Final answer
    x = 605,186.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.