Home / 628,153.83-941,872.73-428,715.63

Finding the Fourth Proportional to 628,153.83, 941,872.73 and 428,715.63

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Solution

The fourth proportional to 628,153.83, 941,872.73 and 428,715.63 is: 642,829.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,153.83 : 941,872.73 = 428,715.63 : x
  2. Step 2: Convert to fraction form
    628,153.83/941,872.73 = 428,715.63/x
  3. Step 3: Cross multiply
    628,153.83x = 941,872.73 × 428,715.63
  4. Step 4: Simplify right side
    628,153.83x = 403,795,558,678.19
  5. Step 5: Solve for x
    x = 403,795,558,678.19/628,153.83
  6. Step 6: Final answer
    x = 642,829.10

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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.